Navtex Receiver
medium
64 models total
A Navtex receiver automatically prints or displays maritime safety information broadcast on 518 kHz in English and 490 kHz in the national language, filtering messages by station and subject so the bridge only sees relevant warnings without anyone standing a radio watch.
Read more — Navtex Receiver explained ▾
What Makes a Navtex Receiver Different
A Navtex receiver is a dedicated, narrow-purpose radio receiver that automatically demodulates and prints or displays text broadcasts of maritime safety information, navigational warnings, weather forecasts and warnings, search and rescue information, and ice reports, without requiring a radio operator to tune in or transcribe anything. It listens continuously on 518 kHz for the international English-language broadcast and, where fitted, on 490 kHz for the national-language service, and it filters incoming messages by originating station and by subject code so the bridge team only sees information relevant to the ship's area and interests. That automatic, unattended reception is what distinguishes Navtex from a general MF/HF radio, VHF set, or satellite communication terminal, none of which are built to filter and log safety broadcasts on their own.
Main Components
Receiver and demodulator
Tuned to 518 kHz and 490 kHz, demodulating the narrow-band direct-printing (NBDP) signal used for Navtex broadcasts.
Antenna
A dedicated whip or wire antenna for the MF band, separate from the ship's main MF/HF communication antenna, since Navtex must keep receiving even while other MF equipment transmits.
Message processor and filter
Decodes the four-character message header, station identifier, subject category such as A for navigational warning or B for weather warning, and message number, and suppresses messages the operator has selected as not relevant or already received.
Display or printer
Older units use a thermal printer producing a paper log; most modern installations use an integrated display with message storage and export, though many ships still keep the printer for a hard-copy record.
Selection and Sizing
- Coverage of both 518 kHz and 490 kHz where the ship trades in waters broadcasting a national-language service
- Message storage capacity and the ability to export or interface with the ship's electronic chart system
- Reliable subject-category filtering, since a receiver that cannot filter buries navigational warnings in low-priority traffic
- Integration with the bridge alarm system so an urgent message triggers an audible alert rather than sitting unread on a display
Regulations and Class
SOLAS Chapter IV requires Navtex reception as part of the Global Maritime Distress and Safety System (GMDSS) for ships trading in sea areas A1 through A3 where Navtex coverage exists, as an alternative or supplement to satellite-based safety information reception. The receiver must carry type approval to the relevant GMDSS performance standard, and its function is checked at survey along with the rest of the GMDSS installation. Certain subject categories, navigational and weather warnings, categories A and B, cannot be deselected by the operator, since SOLAS treats them as always required.
Typical Faults
| Fault | Cause | Consequence |
|---|---|---|
| Missed messages | Wrong station selection for the trading area, or mandatory categories accidentally deselected | Bridge team unaware of navigational or weather warnings in effect |
| Weak or noisy reception | Corroded antenna connection, poor antenna grounding, nearby electrical interference | Garbled or dropped messages, gaps in the safety information log |
| Printer paper or ribbon exhausted unnoticed | No spare consumables kept, low-supply alarm not checked | Loss of hard-copy record even though reception continues |
| Duplicate or repeated messages flooding the log | Message deduplication or station filtering misconfigured | Important new warnings harder to spot among repeats |
What to Look for in a Supplier
- Current GMDSS type approval valid for the flag state and trading areas the ship operates in
- Dual-frequency, 518/490 kHz, capability where the trading pattern requires the national-language service
- A filtering interface the bridge team can actually configure correctly, not one requiring factory support for routine changes
- Spares availability for the antenna, printer consumables and processor unit
Check the station and category selection after every change of trading area; a Navtex set faithfully filtering out the wrong region's warnings gives a false sense of being covered.
19 manufacturers · 64 models
Furuno
16
NX-300
unverified
Frequency khz
490/518
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NX-700A Nav38
unverified
Dual channel
ja
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor or antenna degradation caused by contamination, damage, ageing or poor exposure can produce missing, unstable or implausible data
- Connector, cable or network faults caused by vibration, corrosion or disturbed terminations can cause intermittent data loss or interface alarms
- Power-supply or internal electronics failure caused by ageing, heat or poor ventilation can result in resets, blank indications or complete loss of function
- Configuration or software errors after service or replacement can cause incorrect data, rejected inputs or loss of communication with other bridge equipment
- Mechanical damage or water ingress at exposed components can lead to erratic readings, repeated alarms or loss of the affected channel
Service: Inspect exposed sensors or antennas, cable routes, connectors, power supplies, displays and network interfaces. Confirm that indicated or recorded data is plausible and that built-in tests and alarms operate. Compare configuration and test results with the vessel's approved records and manufacturer documentation.
Spare Parts: Keep maker-recommended fuses, connectors, sensor accessories, fans, interface or power modules and other approved line-replaceable items that match the installed configuration.
Use Cases: Commercial ships, passenger vessels, offshore vessels and workboats requiring bridge navigation, recording, environmental or traffic information.
NX-700B Nav38
unverified
Dual channel
ja
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor or antenna degradation caused by contamination, damage, ageing or poor exposure can produce missing, unstable or implausible data
- Connector, cable or network faults caused by vibration, corrosion or disturbed terminations can cause intermittent data loss or interface alarms
- Power-supply or internal electronics failure caused by ageing, heat or poor ventilation can result in resets, blank indications or complete loss of function
- Configuration or software errors after service or replacement can cause incorrect data, rejected inputs or loss of communication with other bridge equipment
- Mechanical damage or water ingress at exposed components can lead to erratic readings, repeated alarms or loss of the affected channel
Service: Inspect exposed sensors or antennas, cable routes, connectors, power supplies, displays and network interfaces. Confirm that indicated or recorded data is plausible and that built-in tests and alarms operate. Compare configuration and test results with the vessel's approved records and manufacturer documentation.
Spare Parts: Keep maker-recommended fuses, connectors, sensor accessories, fans, interface or power modules and other approved line-replaceable items that match the installed configuration.
Use Cases: Commercial ships, passenger vessels, offshore vessels and workboats requiring bridge navigation, recording, environmental or traffic information.
NX-300 Nav38
unverified
Dual channel
ja
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor or antenna degradation caused by contamination, damage, ageing or poor exposure can produce missing, unstable or implausible data
- Connector, cable or network faults caused by vibration, corrosion or disturbed terminations can cause intermittent data loss or interface alarms
- Power-supply or internal electronics failure caused by ageing, heat or poor ventilation can result in resets, blank indications or complete loss of function
- Configuration or software errors after service or replacement can cause incorrect data, rejected inputs or loss of communication with other bridge equipment
- Mechanical damage or water ingress at exposed components can lead to erratic readings, repeated alarms or loss of the affected channel
Service: Inspect exposed sensors or antennas, cable routes, connectors, power supplies, displays and network interfaces. Confirm that indicated or recorded data is plausible and that built-in tests and alarms operate. Compare configuration and test results with the vessel's approved records and manufacturer documentation.
Spare Parts: Keep maker-recommended fuses, connectors, sensor accessories, fans, interface or power modules and other approved line-replaceable items that match the installed configuration.
Use Cases: Commercial ships, passenger vessels, offshore vessels and workboats requiring bridge navigation, recording, environmental or traffic information.
NX-700A Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NX-700B Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NX-300D
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NX-500
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NX-700C
unverified
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
NX-800
unverified
Common Failures & Inspection Points
- Sensor, antenna or transducer fouling, damage or misalignment causes unstable, missing or inaccurate data
- Power-supply or processor faults cause resets, blank displays or complete loss of indication
- Cable, connector or network faults cause intermittent data or loss of outputs to other bridge systems
- Incorrect configuration or calibration causes persistent disagreement with independent references
- Display or software faults cause frozen values, alarms or unavailable functions
Service: Inspect sensors, antennas, transducers, cabling, power supplies, displays and data interfaces. Compare information with independent references and review alarm history. Verify distribution to dependent bridge systems. Refer to the manufacturer documentation for the exact figure for calibration, alignment and performance criteria.
Spare Parts: Carry fuses, interface cables, approved power supplies, sensor or antenna parts and supported display or processor modules.
Use Cases: Navigation, pilotage, collision avoidance and bridge-system integration.
NX-300 Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Printer
nein
Display
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
NX-700A Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
NX-700B Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Color display
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
FAX-30 Weather Fax
unverified
Type
weather_fax
Frequency range
1.6-22.1 MHz
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Furuno FAX-30 Weather Fax.
FAX-408 Weather Fax
unverified
Type
weather_fax
Frequency range
1.6-22.1 MHz
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Furuno FAX-408 Weather Fax.
NAVpilot-711C Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
ICS Electronics
9
ICS NAV5 Plus
unverified
Frequency khz
490/518
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
ICS NAV6
unverified
Frequency khz
490/518
Common Failures & Inspection Points
- Transmitter or receiver failure caused by RF, antenna, feeder or power faults, noticed as poor range, failed checks or loss of reception
- Antenna/feed-line deterioration caused by corrosion, water ingress or mechanical damage, noticed as intermittent operation or reduced range
- Control or audio failure caused by handset, microphone, display, keypad or controller faults, noticed as inability to operate normal functions
- Position/identity or data-interface failure caused by wiring or configuration faults, noticed as missing or incorrect safety data
- Power-source failure caused by breaker, fuse, converter or emergency-supply faults, noticed as dead equipment or loss of required GMDSS availability
Service: Carry out the permitted operational/self-tests, inspect antennas, feeders, connectors, controls and cooling, and verify normal and emergency power where required. Check vessel identity, position and interfaces appropriate to the equipment type and review recurring alarms or logbook entries. A radio surveyor should confirm the installation and programmed data against the approved radio documentation.
Spare Parts: Carry fuses, approved handsets/microphones or control accessories where applicable, antenna connectors and feeder repair items, selected power-supply components and manufacturer-recommended interface/control spares. The spare scale should match the vessel's declared GMDSS maintenance method.
Use Cases: Used on merchant, offshore, passenger and workboat fleets for distress, safety and routine maritime communications according to the equipment's approved GMDSS function.
NAV5 Plus Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
NAV6 Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Transmitter or receiver failure caused by RF, antenna, feeder or power faults, noticed as poor range, failed checks or loss of reception
- Antenna/feed-line deterioration caused by corrosion, water ingress or mechanical damage, noticed as intermittent operation or reduced range
- Control or audio failure caused by handset, microphone, display, keypad or controller faults, noticed as inability to operate normal functions
- Position/identity or data-interface failure caused by wiring or configuration faults, noticed as missing or incorrect safety data
- Power-source failure caused by breaker, fuse, converter or emergency-supply faults, noticed as dead equipment or loss of required GMDSS availability
Service: Carry out the permitted operational/self-tests, inspect antennas, feeders, connectors, controls and cooling, and verify normal and emergency power where required. Check vessel identity, position and interfaces appropriate to the equipment type and review recurring alarms or logbook entries. A radio surveyor should confirm the installation and programmed data against the approved radio documentation.
Spare Parts: Carry fuses, approved handsets/microphones or control accessories where applicable, antenna connectors and feeder repair items, selected power-supply components and manufacturer-recommended interface/control spares. The spare scale should match the vessel's declared GMDSS maintenance method.
Use Cases: Used on merchant, offshore, passenger and workboat fleets for distress, safety and routine maritime communications according to the equipment's approved GMDSS function.
NAV7
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
NAV7 Plus
unverified
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as ICS Electronics NAV7 Plus.
NAV8
unverified
Common Failures & Inspection Points
- Sensor or antenna degradation caused by contamination, damage, ageing or poor exposure can produce missing, unstable or implausible data
- Connector, cable or network faults caused by vibration, corrosion or disturbed terminations can cause intermittent data loss or interface alarms
- Power-supply or internal electronics failure caused by ageing, heat or poor ventilation can result in resets, blank indications or complete loss of function
- Configuration or software errors after service or replacement can cause incorrect data, rejected inputs or loss of communication with other bridge equipment
- Mechanical damage or water ingress at exposed components can lead to erratic readings, repeated alarms or loss of the affected channel
Service: Inspect exposed sensors or antennas, cable routes, connectors, power supplies, displays and network interfaces. Confirm that indicated or recorded data is plausible and that built-in tests and alarms operate. Compare configuration and test results with the vessel's approved records and manufacturer documentation.
Spare Parts: Keep maker-recommended fuses, connectors, sensor accessories, fans, interface or power modules and other approved line-replaceable items that match the installed configuration.
Use Cases: Commercial ships, passenger vessels, offshore vessels and workboats requiring bridge navigation, recording, environmental or traffic information.
NAV-5 Navtex Receiver
unverified
Frequencies khz
490/518
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault caused by damage, fouling, water ingress or electronics failure, resulting in missing, unstable or implausible navigation data
- Power-supply failure caused by breaker, converter or wiring faults, resulting in loss of indication or repeated restarts
- Network or interface failure caused by damaged cabling, port faults or configuration changes, resulting in loss of data to connected bridge systems
- Display, processor or control failure caused by hardware or software faults, resulting in frozen, blank or unavailable functions
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent references
Service: Compare indicated data and system response with independent references and investigate persistent disagreement. Inspect sensors, antennas, cabling, power supplies, displays and network interfaces applicable to the installation. Verify required alarms and outputs to connected bridge systems using approved procedures. Back up configuration before authorized software or hardware changes. Protect exposed sensors and antennas from paint, deposits and water ingress. Refer to the manufacturer documentation for the exact figure for test, calibration, alignment and recovery procedures.
Spare Parts: Keep fuses, selected power-supply and interface modules, cables or connectors and manufacturer-recommended sensor or electronic spares. Replacement core units must remain compatible with the approved bridge installation. Preserve calibration, identity and configuration data.
Use Cases: It is used for bridge navigation and monitoring on merchant ships, passenger vessels, offshore units or other vessel types where this equipment category is fitted.
WX-1 Weather Fax
unverified
Type
weather_fax
Frequency range
1.6-22.1 MHz
Common Failures & Inspection Points
- Antenna or receiver fault caused by corrosion, cabling damage or electronics failure, resulting in weak reception or missing messages
- Power-supply failure caused by breaker, converter or wiring faults, resulting in loss of the equipment or repeated restarts
- Network or interface failure caused by damaged cabling, port faults or configuration changes, resulting in loss of data to connected systems
- Display, processor or control failure caused by hardware or software faults, resulting in frozen indications, alarms or unavailable functions
- Incorrect configuration or time, position or sensor input caused by setup or upstream faults, resulting in misleading or incomplete information
Service: Inspect sensors, antennas, transducers, cameras, cabling, power supplies and network interfaces applicable to the installed equipment. Compare displayed information with independent references where possible and investigate recurring alarms or missing channels. Verify required outputs to other bridge systems and preserve configuration before approved software or hardware maintenance. Clean exposed sensors and optical surfaces without damaging coatings or seals. Check backup power or recording arrangements where applicable. Refer to the manufacturer documentation for the exact figure for test, calibration, update and recovery procedures.
Spare Parts: Keep fuses, selected power-supply and interface modules, cables or connectors, storage media where applicable and manufacturer-recommended sensor or electronic spares. Replacement core units must remain compatible with the approved bridge installation. Preserve configuration and recorded setup data.
Use Cases: Bridge navigation, monitoring, recording and maritime safety information functions on merchant ships, passenger vessels, offshore units and workboats.
McMurdo
6
Navtex
518/490 kHz
· Navigation Data / Sensor
· Navtex receiver
Frequencies
518/490 kHz
Gmdss approved
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- Fully GMDSS approved with USCG type approval, ensuring regulatory compliance
- Simple, rugged marine‑grade housing suitable for harsh bridge environments
- Low power consumption compared with many newer digital units
- Clear alphanumeric display and audible alarm for urgent messages
- Straightforward installation – compatible with standard 1 m whip antennas
Weaknesses
- Reported memory‑management bugs can cause occasional loss of stored messages
- Antenna tuning is critical; performance degrades if the antenna is not precisely matched to 518/490 kHz
- Sensitive to power‑supply voltage fluctuations, leading to occasional resets
- Limited integration options – no built‑in AIS or NMEA 2000 output
- User interface lacks modern touchscreen features found on newer competitors
Typical Vessels:
Bulk CarrierTankerContainer ShipOffshore Support VesselPassenger Ferry
Certifications:
USCG Type ApprovalIMO GMDSS ComplianceDNV Class Approved
Decision Guide: Choose if you need a proven, low‑cost Navtex receiver that meets all GMDSS requirements and can be installed on vessels with standard antenna setups. Avoid if your vessel requires tight integration with AIS/NMEA networks, high reliability under unstable power conditions, or a modern touchscreen interface.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
G8 EPIRB
unverified
Gps integrated
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
Kannad SafeLink Solo
unverified
Gps integrated
ja
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
Navtex NX-100
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
Navtex NX-200
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
Navtex Pro II
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
NASA Marine
6
Clipper Navtex
518 kHz
· Navigation Data / Sensor
· single-frequency Navtex receiver
Frequencies
518 kHz
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- Low acquisition cost – suitable for vessels with limited budgets
- Simple installation and operation due to single‑frequency design
- Compact unit fits easily into small bridge consoles
- Provides continuous monitoring of the mandatory 518 kHz international channel
Weaknesses
- Only receives on 518 kHz – cannot receive national language broadcasts on 490 kHz
- Small display limits readability, especially in bright conditions
- Limited internal message storage requires frequent clearing
- Lacks advanced features such as AIS integration or multi‑frequency capability
Typical Vessels:
Coastal fishing vesselsTugs and workboatsTraining shipsSmall offshore supply craftRecreational yachts (when compliance is required)
Decision Guide: Choose if you need an inexpensive, easy‑to‑install Navtex that only requires the international 518 kHz channel and space on board is limited. Avoid if your operations depend on national language broadcasts (490 kHz), require larger message archives, or need integrated bridge systems with multi‑frequency support.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
NASA Marine Clipper
unverified
Frequency khz
490/518
Common Failures & Inspection Points
- Antenna, feeder or tuning fault caused by corrosion, damaged cabling or poor connections, resulting in weak transmission, reception problems or equipment alarms
- Power-supply or backup-battery failure caused by charger defects, aged batteries or wiring faults, resulting in loss of availability when main power is removed
- Transmitter or receiver failure caused by RF-component or electronic faults, resulting in inability to establish communications or receive expected traffic
- Position or time-input failure caused by GNSS or network faults, resulting in missing or incorrect data in distress or DSC functions
- Control, display or software fault caused by hardware failure or configuration problems, resulting in frozen controls, error messages or unavailable functions
Service: Perform operational and self-tests permitted by the vessel's procedures without generating unintended distress alerts. Inspect antennas, feeders, grounding, power supplies, backup batteries and connected navigation-data inputs. Verify station identity, position input, time and configured communication services against approved records. Check printers, handsets, microphones and alarm interfaces where fitted. Maintain software, licenses and service subscriptions required by the installed system. Refer to manufacturer and regulatory documentation for exact test methods, battery criteria and approved servicing.
Spare Parts: Keep fuses, handset or microphone accessories, printer consumables where applicable, selected power-supply components and manufacturer-recommended electronic spares. Antenna or feeder repair materials and backup-battery arrangements should reflect the vessel's redundancy plan. Preserve type approval and programmed identity when replacing core units.
Use Cases: Distress, urgency, safety and routine maritime communications within the vessel's GMDSS and operational communications fit.
NASA Target 3
unverified
Frequency khz
490/518
Common Failures & Inspection Points
- Transmitter or receiver failure caused by RF, antenna, feeder or power faults, noticed as poor range, failed checks or loss of reception
- Antenna/feed-line deterioration caused by corrosion, water ingress or mechanical damage, noticed as intermittent operation or reduced range
- Control or audio failure caused by handset, microphone, display, keypad or controller faults, noticed as inability to operate normal functions
- Position/identity or data-interface failure caused by wiring or configuration faults, noticed as missing or incorrect safety data
- Power-source failure caused by breaker, fuse, converter or emergency-supply faults, noticed as dead equipment or loss of required GMDSS availability
Service: Carry out the permitted operational/self-tests, inspect antennas, feeders, connectors, controls and cooling, and verify normal and emergency power where required. Check vessel identity, position and interfaces appropriate to the equipment type and review recurring alarms or logbook entries. A radio surveyor should confirm the installation and programmed data against the approved radio documentation.
Spare Parts: Carry fuses, approved handsets/microphones or control accessories where applicable, antenna connectors and feeder repair items, selected power-supply components and manufacturer-recommended interface/control spares. The spare scale should match the vessel's declared GMDSS maintenance method.
Use Cases: Used on merchant, offshore, passenger and workboat fleets for distress, safety and routine maritime communications according to the equipment's approved GMDSS function.
Clipper Navtex Pro
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna, feeder or tuning fault caused by corrosion, damaged cabling or poor connections, resulting in weak transmission, reception problems or equipment alarms
- Power-supply or backup-battery failure caused by charger defects, aged batteries or wiring faults, resulting in loss of availability when main power is removed
- Transmitter or receiver failure caused by RF-component or electronic faults, resulting in inability to establish communications or receive expected traffic
- Position or time-input failure caused by GNSS or network faults, resulting in missing or incorrect data in distress or DSC functions
- Control, display or software fault caused by hardware failure or configuration problems, resulting in frozen controls, error messages or unavailable functions
Service: Perform operational and self-tests permitted by the vessel's procedures without generating unintended distress alerts. Inspect antennas, feeders, grounding, power supplies, backup batteries and connected navigation-data inputs. Verify station identity, position input, time and configured communication services against approved records. Check printers, handsets, microphones and alarm interfaces where fitted. Maintain software, licenses and service subscriptions required by the installed system. Refer to manufacturer and regulatory documentation for exact test methods, battery criteria and approved servicing.
Spare Parts: Keep fuses, handset or microphone accessories, printer consumables where applicable, selected power-supply components and manufacturer-recommended electronic spares. Antenna or feeder repair materials and backup-battery arrangements should reflect the vessel's redundancy plan. Preserve type approval and programmed identity when replacing core units.
Use Cases: Distress, urgency, safety and routine maritime communications within the vessel's GMDSS and operational communications fit.
Target 3 Pro
unverified
Dual channel
ja
Common Failures & Inspection Points
- Transmitter or receiver failure caused by RF, antenna, feeder or power faults, noticed as poor range, failed checks or loss of reception
- Antenna/feed-line deterioration caused by corrosion, water ingress or mechanical damage, noticed as intermittent operation or reduced range
- Control or audio failure caused by handset, microphone, display, keypad or controller faults, noticed as inability to operate normal functions
- Position/identity or data-interface failure caused by wiring or configuration faults, noticed as missing or incorrect safety data
- Power-source failure caused by breaker, fuse, converter or emergency-supply faults, noticed as dead equipment or loss of required GMDSS availability
Service: Carry out the permitted operational/self-tests, inspect antennas, feeders, connectors, controls and cooling, and verify normal and emergency power where required. Check vessel identity, position and interfaces appropriate to the equipment type and review recurring alarms or logbook entries. A radio surveyor should confirm the installation and programmed data against the approved radio documentation.
Spare Parts: Carry fuses, approved handsets/microphones or control accessories where applicable, antenna connectors and feeder repair items, selected power-supply components and manufacturer-recommended interface/control spares. The spare scale should match the vessel's declared GMDSS maintenance method.
Use Cases: Used on merchant, offshore, passenger and workboat fleets for distress, safety and routine maritime communications according to the equipment's approved GMDSS function.
Target 5
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception, missing messages or persistent receiver alarms
- Incorrect station or message-filter configuration causes relevant broadcasts to be omitted or unwanted messages to dominate
- Printer, display or memory faults prevent messages from being presented or retained even when reception is normal
- Power-supply or backup-power failure causes receiver reset, blank display or loss of continuous watch
- Receiver front-end or internal electronics faults cause poor sensitivity, corrupted messages or complete loss of reception
Service: Check antenna and feeder condition, power supply, time and station configuration, message filters and the ability to receive and display current broadcasts. Review stored messages for unexplained gaps. Test alarms and backup power where fitted. Exact receiver test procedures and regional station settings must follow approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, approved power-supply parts, antenna connectors and selected display or control spares where vessel support policy justifies them.
Use Cases: GMDSS-equipped merchant and passenger vessels requiring automatic reception of maritime safety information.
JRC
5
NCR-333A
518/490 kHz
· Navigation Data / Sensor
· Navtex receiver
Frequencies
518/490 kHz
Printer
ja
Gmdss approved
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- GMDSS approved and SOLAS compliant out‑of‑the‑box
- Built‑in thermal printer for hard‑copy records
- Simple installation with standard bridge power supply
- Proven reliability on a wide range of commercial vessels
Weaknesses
- Thermal print head wears after ~5 years, requiring replacement
- Occasional message duplication reported in harsh EMI environments
- Limited to 518/490 kHz – no support for additional Navtex bands
- No integrated AIS or satellite communication functions
Typical Vessels:
Bulk CarrierTankerContainer ShipGeneral Cargo VesselPassenger Ferry
Certifications:
IMO SOLASUSCG Type ApprovalGMDSS Approved
Decision Guide: Choose if you need a dedicated, GMDSS‑compliant Navtex receiver with an on‑board printer and proven reliability for standard safety information bands. Avoid if your vessel requires multi‑band Navtex coverage, integrated AIS/SATCOM functionality, or minimal long‑term maintenance of the print head.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
NCR-333 Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as JRC NCR-333 Navtex Receiver.
NCR-333A Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
JAX-9B Weather Fax
unverified
Type
weather_fax
Frequency range
1.6-22.1 MHz
Common Failures & Inspection Points
- Loss of primary or reserve power from a tripped breaker, failed power unit, loose connection, or depleted battery causes a dead unit, rebooting, or failed transmission
- Antenna, feeder, connector, or matching faults from corrosion, water ingress, or physical damage cause poor range or weak received signals
- Control-panel, display, keypad, or software faults prevent channel selection, message handling, or operator input
- Interface or position-data failure from wiring, configuration, or sensor faults removes position or connected-system data
- Internal transmitter, receiver, or modem faults from component ageing or overheating cause intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, permitted distress/safety self-tests, interfaces, audio quality, time and position inputs, and logged faults. Regulatory tests and adjustments must follow vessel radio procedures and manufacturer documentation.
Spare Parts: Carry model-specific fuses, approved power-supply items, handset or microphone accessories where relevant, connector and sealing items, and critical interface or antenna components recommended by the manufacturer.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
JAN-9102 Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Loss of primary or reserve power from a tripped breaker, failed power unit, loose connection, or depleted battery causes a dead unit, rebooting, or failed transmission
- Antenna, feeder, connector, or matching faults from corrosion, water ingress, or physical damage cause poor range or weak received signals
- Control-panel, display, keypad, or software faults prevent channel selection, message handling, or operator input
- Interface or position-data failure from wiring, configuration, or sensor faults removes position or connected-system data
- Internal transmitter, receiver, or modem faults from component ageing or overheating cause intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, permitted distress/safety self-tests, interfaces, audio quality, time and position inputs, and logged faults. Regulatory tests and adjustments must follow vessel radio procedures and manufacturer documentation.
Spare Parts: Carry model-specific fuses, approved power-supply items, handset or microphone accessories where relevant, connector and sealing items, and critical interface or antenna components recommended by the manufacturer.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
JRC (Japan Radio Co)
5
NCR-333A
unverified
Dual channel
ja
IMO Compliant
ja
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
NCR-333 Nav38
unverified
Dual channel
ja
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or receiver fault caused by corrosion, cabling damage or electronics failure, resulting in weak reception or missing messages
- Power-supply failure caused by breaker, converter or wiring faults, resulting in loss of the equipment or repeated restarts
- Network or interface failure caused by damaged cabling, port faults or configuration changes, resulting in loss of data to connected systems
- Display, processor or control failure caused by hardware or software faults, resulting in frozen indications, alarms or unavailable functions
- Incorrect configuration or time, position or sensor input caused by setup or upstream faults, resulting in misleading or incomplete information
Service: Inspect sensors, antennas, transducers, cameras, cabling, power supplies and network interfaces applicable to the installed equipment. Compare displayed information with independent references where possible and investigate recurring alarms or missing channels. Verify required outputs to other bridge systems and preserve configuration before approved software or hardware maintenance. Clean exposed sensors and optical surfaces without damaging coatings or seals. Check backup power or recording arrangements where applicable. Refer to the manufacturer documentation for the exact figure for test, calibration, update and recovery procedures.
Spare Parts: Keep fuses, selected power-supply and interface modules, cables or connectors, storage media where applicable and manufacturer-recommended sensor or electronic spares. Replacement core units must remain compatible with the approved bridge installation. Preserve configuration and recorded setup data.
Use Cases: Bridge navigation, monitoring, recording and maritime safety information functions on merchant ships, passenger vessels, offshore units and workboats.
NCR-333 Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps. Verify backup power where fitted. Exact regional settings and service tests require approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
NCR-333A Mk2
unverified
Dual channel
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps. Verify backup power where fitted. Exact regional settings and service tests require approved documentation.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
NCR-500
unverified
Dual channel
ja
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
Haihua
2
HNR-5000
unverified
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
HNR-6000
unverified
Common Failures & Inspection Points
- Loss of supply power from a tripped breaker, failed power unit, loose connection, or depleted reserve battery causes a dead unit, rebooting, or failure to transmit
- Antenna, feeder, connector, or matching fault caused by corrosion, water ingress, or physical damage results in poor range, failed transmission, or weak received signals
- Control-panel, display, keypad, or software faults can prevent channel selection, message handling, or normal operator input
- Interface or position-data failure caused by wiring, configuration, or sensor faults can remove position information or connected-system data
- Internal transmitter, receiver, or modem faults caused by component ageing or overheating can produce intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, distress and safety functions permitted for routine testing, interfaces, audio quality, time and position inputs, and logged self-test results. Any regulatory test or adjustment must follow the vessel's radio procedures and manufacturer documentation.
Spare Parts: Carry the model-specific fuses, approved power-supply items, handset or microphone accessories, connector and sealing items, and critical interface or antenna components recommended by the manufacturer and vessel radio-maintenance plan.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
Sailor / Cobham
2
6390 Navtex
518/490/4209.5 kHz
· Navigation Data / Sensor
· NAVTEX MF/HF receiver
Frequencies
518/490/4209.5 kHz
Gmdss approved
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- Triple‑frequency coverage (518/490/4209.5 kHz) for worldwide NAVTEX service
- GMDSS approved, meeting SOLAS requirements
- Simple plug‑and‑play installation with minimal wiring
- Low power consumption suitable for all vessel sizes
- Proven reliability in harsh marine environments
Weaknesses
- Known integration issues with newer Sailor bridge consoles
- Antenna compatibility limited to specific MF/HF types
- Message storage can become full quickly, requiring manual purge
- No modern digital interfaces (e.g., NMEA 2000 or Ethernet)
- Older hardware may be harder to obtain spare parts for
Typical Vessels:
Bulk CarrierContainer ShipTankerPassenger VesselOffshore Supply Vessel
Certifications:
GMDSS Approved
Decision Guide: Choose if: you operate a vessel that already uses Sailor bridge equipment, need reliable triple‑frequency NAVTEX reception, and prefer a simple, low‑power solution. Avoid if: you require integrated AIS/VDES data, modern network interfaces, or seamless compatibility with the latest Sailor consoles.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
6390 Navtex
unverified
Frequency khz
490/518
IMO Compliant
ja
Common Failures & Inspection Points
- Transmitter or receiver failure caused by RF, antenna, feeder or power faults, noticed as poor range, failed checks or loss of reception
- Antenna/feed-line deterioration caused by corrosion, water ingress or mechanical damage, noticed as intermittent operation or reduced range
- Control or audio failure caused by handset, microphone, display, keypad or controller faults, noticed as inability to operate normal functions
- Position/identity or data-interface failure caused by wiring or configuration faults, noticed as missing or incorrect safety data
- Power-source failure caused by breaker, fuse, converter or emergency-supply faults, noticed as dead equipment or loss of required GMDSS availability
Service: Carry out the permitted operational/self-tests, inspect antennas, feeders, connectors, controls and cooling, and verify normal and emergency power where required. Check vessel identity, position and interfaces appropriate to the equipment type and review recurring alarms or logbook entries. A radio surveyor should confirm the installation and programmed data against the approved radio documentation.
Spare Parts: Carry fuses, approved handsets/microphones or control accessories where applicable, antenna connectors and feeder repair items, selected power-supply components and manufacturer-recommended interface/control spares. The spare scale should match the vessel's declared GMDSS maintenance method.
Use Cases: Used on merchant, offshore, passenger and workboat fleets for distress, safety and routine maritime communications according to the equipment's approved GMDSS function.
Samyung
2
SNX-300 Navtex
518/490 kHz
· Navigation Data / Sensor
· Navtex receiver
Frequencies
518/490 kHz
Gmdss approved
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- Low acquisition cost compared with most Western brands
- GMDSS approved for mandatory safety communications
- Dual‑frequency operation (518/490 kHz) covers both global and regional broadcasts
- Simple plug‑and‑play installation, suited to vessels with limited bridge space
- Widely used on Korean‑built ships, so spare parts are often stocked locally
Weaknesses
- Limited after‑sales service network outside Korea
- Display quality reported as dim or low‑resolution
- Antenna sensitivity can be marginal, requiring careful mounting
- Basic feature set – no integrated AIS or multi‑channel logging
- Reliability concerns on long voyages in harsh sea states
Typical Vessels:
Bulk CarrierContainer ShipTankerGeneral Cargo VesselOffshore Supply Vessel
Certifications:
GMDSS Type Approval
Decision Guide: Choose if: you need a cost‑effective Navtex solution, the vessel is Korean‑built or operates in regions where Samsung support is available, and only basic safety message reception is required. Avoid if: high reliability, extensive service coverage, advanced display or integrated bridge systems are essential.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
SNX-300 Navtex Receiver
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or receiver fault caused by corrosion, cabling damage or electronics failure, resulting in weak reception or missing messages
- Power-supply failure caused by breaker, converter or wiring faults, resulting in loss of the equipment or repeated restarts
- Network or interface failure caused by damaged cabling, port faults or configuration changes, resulting in loss of data to connected systems
- Display, processor or control failure caused by hardware or software faults, resulting in frozen indications, alarms or unavailable functions
- Incorrect configuration or time, position or sensor input caused by setup or upstream faults, resulting in misleading or incomplete information
Service: Inspect sensors, antennas, transducers, cameras, cabling, power supplies and network interfaces applicable to the installed equipment. Compare displayed information with independent references where possible and investigate recurring alarms or missing channels. Verify required outputs to other bridge systems and preserve configuration before approved software or hardware maintenance. Clean exposed sensors and optical surfaces without damaging coatings or seals. Check backup power or recording arrangements where applicable. Refer to the manufacturer documentation for the exact figure for test, calibration, update and recovery procedures.
Spare Parts: Keep fuses, selected power-supply and interface modules, cables or connectors, storage media where applicable and manufacturer-recommended sensor or electronic spares. Replacement core units must remain compatible with the approved bridge installation. Preserve configuration and recorded setup data.
Use Cases: Bridge navigation, monitoring, recording and maritime safety information functions on merchant ships, passenger vessels, offshore units and workboats.
Simrad
2
NX40 Navtex Receiver
unverified
Frequencies khz
490/518
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Simrad NX40 Navtex Receiver.
AP70 Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
Alphatron Marine
1
AlphaPilot Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
IEC Telecom
1
Navtex NR-100
518/490 kHz
· Navigation Data / Sensor
· Navtex receiver
Frequencies
518/490 kHz
Printer
ja
Gmdss approved
ja
Common Failures & Inspection Points
- Antenna, feeder or casing damage reduces communication or locating performance and may cause self-test faults
- Battery, emergency-power or power-supply deterioration causes resets, low-voltage alarms or failure to operate
- Water ingress or corrosion causes intermittent operation, damaged connectors or internal faults
- Configuration, registration or identity errors cause incorrect vessel or beacon information
- Internal transceiver, display or control faults cause failed self-tests, missing communications or unavailable emergency functions
Service: Inspect antennas, casing, mounting, power supplies, emergency batteries, controls and programmed identity data as applicable. Perform only approved self-tests and permitted radio tests. Verify accessibility, release arrangements and emergency-power availability where required. Refer to manufacturer and regulatory documentation for the exact figure for test and replacement criteria.
Spare Parts: Carry fuses, handsets or microphones where applicable, approved batteries or chargers, antenna connectors, mounting or release parts and supported control modules.
Strengths
- Dual‑frequency coverage (518 kHz & 490 kHz) for worldwide Navtex service
- Built‑in printer provides a hard copy record of safety messages
- Simple, rugged design suitable for low‑maintenance installations
- GMDSS approved, meeting basic regulatory requirements for most vessels
- Cost‑effective solution for vessels with limited budget
Weaknesses
- Printer mechanism reported to be prone to jamming or ink issues
- Antenna interference can affect reception in high‑electromagnetic environments
- Display contrast may be low, reducing readability in bright daylight
- Limited advanced features (e.g., no LCD backlight, no integrated AIS)
- Support and spare parts availability may be less robust than major brands
Typical Vessels:
Coastal cargo vesselsTugboatsSupply & support shipsFishing vesselsSmall passenger ferries
Decision Guide: Choose if you need a basic, GMDSS‑compliant Navtex receiver with printing capability at a low purchase price and can tolerate occasional printer or display quirks. Avoid if your operation demands high reliability, advanced user interface features, or extensive after‑sales support.
Use Cases: Distress, safety, ship-to-ship, ship-to-shore and search-and-rescue service.
Kongsberg Maritime
1
K-Pilot Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Kongsberg K-Pilot Autopilot.
Navis
1
NP-3000 Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Loss of primary or reserve power from a tripped breaker, failed power unit, loose connection, or depleted battery causes a dead unit, rebooting, or failed transmission
- Antenna, feeder, connector, or matching faults from corrosion, water ingress, or physical damage cause poor range or weak received signals
- Control-panel, display, keypad, or software faults prevent channel selection, message handling, or operator input
- Interface or position-data failure from wiring, configuration, or sensor faults removes position or connected-system data
- Internal transmitter, receiver, or modem faults from component ageing or overheating cause intermittent communication, alarms, or inability to establish a link
Service: Verify primary and reserve power, antenna and feeder condition, permitted distress/safety self-tests, interfaces, audio quality, time and position inputs, and logged faults. Regulatory tests and adjustments must follow vessel radio procedures and manufacturer documentation.
Spare Parts: Carry model-specific fuses, approved power-supply items, handset or microphone accessories where relevant, connector and sealing items, and critical interface or antenna components recommended by the manufacturer.
Use Cases: Used on SOLAS merchant ships, offshore vessels, passenger ships, fishing vessels, workboats, and other craft requiring marine radio, distress, safety, or navigation communications.
Praxis
1
ProSteer Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Praxis ProSteer Autopilot.
Raytheon Anschuetz
1
NautoSteer Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault caused by damage, fouling, water ingress or electronics failure, resulting in missing, unstable or implausible navigation data
- Power-supply failure caused by breaker, converter or wiring faults, resulting in loss of indication or repeated restarts
- Network or interface failure caused by damaged cabling, port faults or configuration changes, resulting in loss of data to connected bridge systems
- Display, processor or control failure caused by hardware or software faults, resulting in frozen, blank or unavailable functions
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent references
Service: Compare indicated data and system response with independent references and investigate persistent disagreement. Inspect sensors, antennas, cabling, power supplies, displays and network interfaces applicable to the installation. Verify required alarms and outputs to connected bridge systems using approved procedures. Back up configuration before authorized software or hardware changes. Protect exposed sensors and antennas from paint, deposits and water ingress. Refer to the manufacturer documentation for the exact figure for test, calibration, alignment and recovery procedures.
Spare Parts: Keep fuses, selected power-supply and interface modules, cables or connectors and manufacturer-recommended sensor or electronic spares. Replacement core units must remain compatible with the approved bridge installation. Preserve calibration, identity and configuration data.
Use Cases: It is used for bridge navigation and monitoring on merchant ships, passenger vessels, offshore units or other vessel types where this equipment category is fitted.
Sailor
1
Sailor 6391 Navtex
unverified
Frequencies khz
490/518/4209.5
IMO Compliant
ja
Common Failures & Inspection Points
- Sensor, antenna or transducer fault, typically indicated by missing, unstable or implausible navigation data
- Power-supply or processor failure, typically indicated by blank display, rebooting or unavailable function
- Network/interface fault, typically indicated by missing data on connected bridge systems or communication alarms
- Cable/connector corrosion or water ingress, typically indicated by intermittent operation or signal loss
- Recording/storage or software fault on recorder-type equipment, typically indicated by data gaps, recording alarms or failed playback
Service: Check self-tests, sensor/transducer condition, data interfaces, time/position inputs, recording status where applicable, power supplies and alarm history; performance tests and calibration must follow approved manufacturer and statutory procedures.
Spare Parts: Carry critical fuses, power supplies, interface modules, storage media where approved, sensors/transducers or display peripherals according to equipment criticality.
Use Cases: Used on merchant, passenger, offshore and naval vessels for navigation, bridge situational awareness, environmental sensing and voyage-data recording. This entry applies specifically to the Navtex Receiver variant identified as Sailor Sailor 6391 Navtex.
Sperry Marine
1
NAVIPILOT 4000
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.
Tokyo Keiki
1
PR-9000 Autopilot
unverified
Type
autopilot
IMO Compliant
ja
Common Failures & Inspection Points
- Antenna or feeder damage causes weak reception or missing messages
- Incorrect station or message-category configuration causes relevant broadcasts to be omitted
- Display, printer or memory faults prevent messages from being presented or retained
- Power-supply failure causes receiver resets or loss of continuous watch
- Internal receiver faults cause poor sensitivity, corrupted messages or complete reception loss
Service: Check antenna, feeder, power supply, station selection, message filters and receipt of current broadcasts. Review stored messages for unexplained gaps and verify backup power where fitted. Confirm operator configuration remains appropriate to the voyage area. Refer to the manufacturer and GMDSS documentation for the exact figure for service tests and settings.
Spare Parts: Carry printer consumables where applicable, fuses, antenna connectors, power-supply parts and selected display or control components.
Use Cases: GMDSS-equipped vessels requiring automatic reception of maritime safety information.