GPS Receiver
A marine GPS receiver reports position only; it says nothing about heading unless paired with a second antenna for GNSS compass mode, which is why SOLAS still requires an independent, non-GNSS means of fixing position.
Read more — GPS Receiver explained ▾
What sets this receiver apart from other position sources
A marine GPS receiver decodes signals from the US GPS constellation and, on most modern sets, also from GLONASS, Galileo and BeiDou, giving a fused multi-constellation fix rather than relying on GPS alone. It answers one question only: where is the antenna right now. It does not tell the bridge which way the bow points -- that is the gyrocompass's job -- and it does not replace a second, independent means of fixing position, which SOLAS still requires precisely because a single GNSS source can fail or be spoofed without warning.
Main components
Antenna
A dome-mounted active antenna with integral low-noise amplifier, positioned with a clear sky view away from radar scanners and funnel exhaust, which otherwise degrade signal-to-noise ratio.
Receiver / processing unit
Tracks 12 to 30+ satellite channels simultaneously, computes a weighted position solution, and applies differential corrections where available (SBAS such as EGNOS or WAAS, or a local DGPS beacon feed).
Output interfaces
NMEA 0183 or NMEA 2000 serial output feeding ECDIS, AIS, VDR and autopilot in parallel; many bridges wire two receivers into a changeover or voting arrangement so a single antenna fault does not blind every downstream system at once.
Selection criteria
- Number of tracked constellations and channels -- more channels shorten re-acquisition time after a mast shadow or heavy roll.
- Update rate, typically 1 Hz for standard navigation, higher for dynamic positioning feeds.
- Differential correction support (SBAS, RTK) where the trade requires metre-level or sub-metre accuracy, for example dredging or offshore support work.
- Output protocol compatibility with the existing ECDIS and VDR interface list.
Regulations and class
SOLAS Chapter V requires vessels to carry a receiver for a global navigation satellite system, or terrestrial radio navigation system, appropriate to the voyage, and to maintain a means of determining position that does not depend solely on one GNSS. Class societies survey the installation as part of the navigation equipment audit rather than as a standalone item, checking that the antenna position and cabling match the approved drawing and that backup arrangements are functional.
Typical faults
- Antenna cable corrosion at the deck gland, causing intermittent signal loss that looks like a satellite outage rather than a wiring fault.
- Loss of differential correction when the vessel moves out of SBAS or beacon coverage, degrading accuracy without triggering an alarm on older receivers.
- Multipath error near steel superstructure or containers, producing a stable but wrong fix that the receiver reports with high confidence.
- Firmware not updated for GPS week-number rollover, which can jump the reported date and confuse logging systems.
What to look for in a supplier
- Type approval certificate matching the flag state and class society of the vessel, not just a generic marine label.
- Documented output protocol list so integration with the existing ECDIS and AIS does not need a separate converter.
- Availability of spares and firmware updates well beyond the initial warranty period, given typical fit life of ten years or more.
Two receivers from the same manufacturer and the same antenna run are still a single point of failure if they share a mast position and a power supply -- route the second antenna and cable separately if the redundancy is meant to mean anything during a storm or a mast strike.
10 manufacturers · 84 models
Furuno
19- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- 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
- Sensor or antenna fault caused by fouling, damage, wear or water ingress, resulting in loss, weak response or degraded navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent navigation references
Kongsberg Maritime
13- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Sensor drift, damage or loss of reference caused by ageing, magnetic influence, antenna issues or internal faults can produce unstable or incorrect heading or position information
- Control or interface failure caused by electronics, cabling or network faults can create steering alarms, rejected inputs or loss of automatic control
- Power-supply interruption caused by loose connections, protection trips or internal failure can result in resets or total loss of indication
- Incorrect calibration or configuration after maintenance can show as persistent offset, poor course keeping or disagreement with independent references
- Mechanical wear in connected steering components where applicable can cause slow response, hunting, leakage or increased steering error
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
JRC (Japan Radio Co)
11- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Antenna/sensor or cable fault, typically indicated by loss of position/heading/speed data or sensor alarm
- Power-supply failure, typically indicated by blank display or unavailable output
- Signal interference, blockage or poor sensor environment, typically indicated by unstable data, loss of fix or erratic readings
- Interface/network configuration fault, typically indicated by downstream equipment shows missing or invalid data
- Calibration/alignment drift where applicable, typically indicated by systematic heading/speed error or discrepancy with independent references
- Sensor, antenna or transducer damage causes unstable, missing or inaccurate navigation data
- Power-supply failure causes receiver or display reset and complete loss of output
- Cable, connector or interface faults cause intermittent data or loss of signals to dependent systems
- Incorrect alignment, calibration or configuration causes persistent disagreement with independent references
- Processor or display faults cause frozen values, alarms or unavailable navigation information
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
- Sensor contamination, mechanical damage, ageing, or environmental exposure causes drifting, unstable, or missing measurements
- Power-supply, fuse, or internal electronic faults cause loss of indication, rebooting, or sensor-offline alarms
- Cable, connector, network, or interface faults produce intermittent data or loss of information at repeaters and connected systems
- Incorrect alignment, calibration, configuration, or reference input causes a consistent offset or implausible readings
- Display, repeater, processor, or software faults can cause frozen values, failed alarms, or disagreement between indications
Hemisphere GNSS
10- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor or antenna fault caused by fouling, damage, wear or water ingress, resulting in loss, weak response or degraded navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent navigation references
Simrad
10- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Antenna or sensor fault caused by damage, water ingress or obstruction, resulting in loss or degradation of navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration or configuration error caused by incorrect setup, resulting in persistent disagreement with independent navigation references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor or transmitter failure caused by electronics, RF, antenna or transducer faults, noticed as missing or degraded navigation data
- External sensor-input failure caused by GNSS, heading, speed or network faults, noticed as alarms, frozen data or misaligned overlays
- Display/processor failure caused by power, cooling, storage or software faults, noticed as blank screen, rebooting or unavailable functions
- Antenna/transducer/cable damage caused by weather, water ingress, fouling or impact, noticed as weak, intermittent or implausible signals
- Incorrect configuration or calibration caused by maintenance or operator error, noticed as persistent disagreement with independent references
Garmin Marine
7- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Antenna, feeder or connector damage causes weak satellite reception, position loss or frequent alarms
- Power-supply failure causes receiver resets or complete loss of position output
- Incorrect configuration or datum settings cause position discrepancies or incompatible outputs
- Serial, network or NMEA interface faults remove position from ECDIS, AIS, GMDSS or other consumers
- Receiver or firmware faults cause intermittent fixes, frozen position or integrity warnings
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
Trimble Marine
6- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor or antenna fault caused by fouling, damage, wear or water ingress, resulting in loss, weak response or degraded navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent navigation references
- Sensor drift, damage or loss of reference caused by ageing, magnetic influence, antenna issues or internal faults can produce unstable or incorrect heading or position information
- Control or interface failure caused by electronics, cabling or network faults can create steering alarms, rejected inputs or loss of automatic control
- Power-supply interruption caused by loose connections, protection trips or internal failure can result in resets or total loss of indication
- Incorrect calibration or configuration after maintenance can show as persistent offset, poor course keeping or disagreement with independent references
- Mechanical wear in connected steering components where applicable can cause slow response, hunting, leakage or increased steering error
- Sensor drift, damage or loss of reference caused by ageing, magnetic influence, antenna issues or internal faults can produce unstable or incorrect heading or position information
- Control or interface failure caused by electronics, cabling or network faults can create steering alarms, rejected inputs or loss of automatic control
- Power-supply interruption caused by loose connections, protection trips or internal failure can result in resets or total loss of indication
- Incorrect calibration or configuration after maintenance can show as persistent offset, poor course keeping or disagreement with independent references
- Mechanical wear in connected steering components where applicable can cause slow response, hunting, leakage or increased steering error
- Sensor drift, damage or loss of reference caused by ageing, magnetic influence, antenna issues or internal faults can produce unstable or incorrect heading or position information
- Control or interface failure caused by electronics, cabling or network faults can create steering alarms, rejected inputs or loss of automatic control
- Power-supply interruption caused by loose connections, protection trips or internal failure can result in resets or total loss of indication
- Incorrect calibration or configuration after maintenance can show as persistent offset, poor course keeping or disagreement with independent references
- Mechanical wear in connected steering components where applicable can cause slow response, hunting, leakage or increased steering error
Leica Geosystems
3- Loss of sensor input or damaged cabling causes missing, frozen or implausible navigation data
- Antenna, transducer or scanner faults reduce detection or measurement performance and generate equipment alarms
- Power-supply or cooling faults cause resets, blank displays or complete loss of function
- Configuration or interface faults cause disagreement between systems or missing data on connected equipment
- Display, control or processing faults cause unstable operation, error messages or inability to select required functions
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Sensor or antenna fault caused by fouling, damage, wear or water ingress, resulting in loss, weak response or degraded navigation data
- Power-supply failure caused by breaker, converter or wiring problems, resulting in loss of indication
- Processor or display fault caused by electronics or software problems, resulting in frozen, blank or erroneous output
- Interface or network failure caused by cabling or configuration faults, resulting in missing data at connected bridge equipment
- Calibration, alignment or configuration error caused by incorrect setup or maintenance, resulting in persistent disagreement with independent navigation references
Wärtsilä
3- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
Topcon Marine
2- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline