Gyrocompass
critical
IMO Required
141 models total
North-seeking gyroscopic compass for heading reference. IMO-required on SOLAS vessels.
5 yr
Class Survey
20 yr
Typical Lifetime
Typical Manufacturers
Raytheon Anschütz
Sperry Marine
Tokyo Keiki
Raytheon
20 manufacturers · 141 models
Raytheon Anschütz
20
Standard 22
unverified
Equipment category
gyrocompass
SOLAS Approved
ja
Horizon MF
unverified
Equipment category
gyrocompass
Technology
fiber_optic
SOLAS Approved
ja
Standard 22 Compact
unverified
Settling time hr
3
IMO Compliant
ja
Horizon HF
unverified
Settling time hr
2
IMO Compliant
ja
Standard 20 Plus
unverified
Settling time hr
3
IMO Compliant
ja
Standard 22 MK4
unverified
Settling time hr
2
IMO Compliant
ja
Standard 22 MK5
unverified
Settling time hr
2
IMO Compliant
ja
Standard 4 Plus
unverified
Settling time hr
2
IMO Compliant
ja
Horizon MF Compact
unverified
Settling time hr
2
IMO Compliant
ja
MAHRS PREMIER
unverified
Type
Attitude Heading Reference
IMO Compliant
ja
MAHRS APOGEE
unverified
Type
Attitude Heading Reference
IMO Compliant
ja
Standard 22 NX
unverified
IMO Compliant
ja
Standard 4 NX
unverified
IMO Compliant
ja
Horizon HF Compact
unverified
IMO Compliant
ja
Horizon DF
unverified
IMO Compliant
ja
MAHRS Premier Mk2
unverified
IMO Compliant
ja
NAVIGAT FOG 3000
unverified
IMO Compliant
ja
Standard 22 NX Mk2
unverified
IMO Compliant
ja
Horizon MF Mk2
unverified
IMO Compliant
ja
NAVIGAT FOG 3001
unverified
IMO Compliant
ja
Sperry Marine
19
NAVIGAT X MK1
unverified
Equipment category
gyrocompass
SOLAS Approved
ja
NAVIGAT X MK2
unverified
Equipment category
gyrocompass
SOLAS Approved
ja
MK37
unverified
Equipment category
gyrocompass
Technology
mechanical
SOLAS Approved
ja
MK39 Mod 3C
unverified
Settling time hr
2
IMO Compliant
ja
MK49 Mod 1
unverified
Settling time hr
2
IMO Compliant
ja
MK49 Mod 2
unverified
Settling time hr
2
IMO Compliant
ja
NAVIGAT 3000
unverified
Settling time hr
2
IMO Compliant
ja
NAVIGAT 3000 Compact
unverified
Variant
Compact
IMO Compliant
ja
NAVIGAT 3000 Standard
unverified
Variant
Standard
IMO Compliant
ja
NAVIGAT 3000 Heavy-Duty
unverified
Variant
Heavy-Duty
IMO Compliant
ja
NAVIGAT 3000 Mk2
unverified
IMO Compliant
ja
NAVIGAT 3000 Mk3
unverified
IMO Compliant
ja
MK49 Mod 3
unverified
IMO Compliant
ja
MK39 Mod 4
unverified
IMO Compliant
ja
MK49 Mod 4
unverified
IMO Compliant
ja
NAVIGAT 3000 Mk4
unverified
IMO Compliant
ja
Naviknot 600 Mk2
unverified
IMO Compliant
ja
MK39 Mod4 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
50
Follow up deg sec
30
IMO Compliant
ja
NAVIGAT 2100 Fiber Optic
unverified
Heading accuracy deg
0.1
Settling time min
15
Fiber optic
ja
IMO Compliant
ja
Furuno
16
SCX-20
Antenna Count
4
Heading Accuracy
1.0 deg RMS
Gnss
GPS, GLONASS, Galileo, QZSS, BeiDou
Outputs
NMEA 0183 / NMEA 2000
SCX-21 Mk2
unverified
Type
FOG/MEMS Heading Sensor
PG-700 Rate Gyro
unverified
Type
FOG/MEMS Heading Sensor
GP-170D Mk3
unverified
IMO Compliant
ja
GP-39 Mk2
unverified
IMO Compliant
ja
SC-50 Mk3
unverified
IMO Compliant
ja
SC-110 Mk2
unverified
IMO Compliant
ja
SC-130 Mk2
unverified
IMO Compliant
ja
DS-80 Mk3
unverified
IMO Compliant
ja
DS-86 Mk3
unverified
IMO Compliant
ja
DS-880 Mk2
unverified
IMO Compliant
ja
SC-110 Satellite Compass
unverified
Heading accuracy deg
0.5
Settling time min
5
Satellite based
ja
SC-130 Satellite Compass
unverified
Heading accuracy deg
0.25
Settling time min
3
Satellite based
ja
Multi antenna
ja
SC-50 Satellite Compass
unverified
Heading accuracy deg
0.5
Settling time min
5
Satellite based
ja
SC-60 Satellite Compass
unverified
Heading accuracy deg
0.4
Settling time min
4
Satellite based
ja
SC-33 Satellite Compass
unverified
Heading accuracy deg
0.6
Settling time min
5
Satellite based
ja
Compact
ja
iXBlue / Exail
16
Octans
unverified
Type
Fiber Optic Gyro
IMO Compliant
ja
Phins C5
unverified
Type
Fiber Optic Gyro
IMO Compliant
nein
Phins C7
unverified
Type
Fiber Optic Gyro
IMO Compliant
nein
HYDRINS
unverified
Type
Fiber Optic Gyro
IMO Compliant
nein
Marins M7
unverified
Type
Fiber Optic Gyro
IMO Compliant
nein
ATLANS
unverified
Type
Fiber Optic Gyro
IMO Compliant
nein
Octans 3000
unverified
IMO Compliant
ja
Phins Compact C7
unverified
IMO Compliant
ja
Phins Surface
unverified
IMO Compliant
ja
Quadrans
unverified
IMO Compliant
ja
Octans 4000
unverified
IMO Compliant
ja
Phins Compact C8
unverified
IMO Compliant
ja
Phins C9 INS
unverified
IMO Compliant
ja
Quadrans Mk2
unverified
IMO Compliant
ja
Netans
unverified
IMO Compliant
ja
Marins M8
unverified
IMO Compliant
ja
Tokyo Keiki
15
TG-8000
unverified
Settling time hr
2
IMO Compliant
ja
Follow up error deg
0.1
TG-8500
unverified
Settling time hr
2
IMO Compliant
ja
Follow up error deg
0.1
TG-5000
unverified
Settling time hr
2
IMO Compliant
ja
Follow up error deg
0.1
TG-8000 Compact
unverified
Variant
Compact
IMO Compliant
ja
TG-8000 Standard
unverified
Variant
Standard
IMO Compliant
ja
TG-8000 Heavy-Duty
unverified
Variant
Heavy-Duty
IMO Compliant
ja
TG-9000
unverified
IMO Compliant
ja
TG-8500S
unverified
IMO Compliant
ja
TG-6100
unverified
IMO Compliant
ja
TG-5100
unverified
IMO Compliant
ja
TG-9000 Mk2
unverified
IMO Compliant
ja
TG-8500S Mk2
unverified
IMO Compliant
ja
ES-5400 Mk2
unverified
IMO Compliant
ja
TG-8000 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
60
Follow up deg sec
20
IMO Compliant
ja
TG-8500 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
45
Follow up deg sec
25
IMO Compliant
ja
JRC (Japan Radio Co)
9
JHS-32A
unverified
Settling time hr
3
IMO Compliant
ja
JHS-34A
unverified
Settling time hr
2
IMO Compliant
ja
JHS-182
unverified
Settling time hr
2
IMO Compliant
ja
JLR-31 Mk2
unverified
IMO Compliant
ja
JLR-7900 Mk2
unverified
IMO Compliant
ja
JLR-4340 Mk2
unverified
IMO Compliant
ja
JHS-32A Mk2
unverified
IMO Compliant
ja
JHS-34A Mk2
unverified
IMO Compliant
ja
JLN-740A Mk3
unverified
IMO Compliant
ja
SAM Electronics
9
NAVIGAT 2100 Fiber-Optic
unverified
Type
Fiber Optic
IMO Compliant
ja
NAVIGAT 2500 MK1
unverified
Type
Mechanical
IMO Compliant
ja
NAVIGAT X MK2
unverified
Type
Mechanical
IMO Compliant
ja
NAVIGAT 2100 FOG Mk2
unverified
IMO Compliant
ja
NAVIGAT 2500 Mk3
unverified
IMO Compliant
ja
NAVIGAT X FOG
unverified
IMO Compliant
ja
Navigat 3000 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
50
IMO Compliant
ja
Navigat X MK1 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
40
IMO Compliant
ja
Fiber optic
ja
Navigat X MK2 Gyrocompass
unverified
Heading accuracy deg
0.08
Settling time min
30
IMO Compliant
ja
Fiber optic
ja
Safran / SG Brown
7
SG Brown Meridian
unverified
Type
Ring Laser Gyro
Settling time hr
0.5
SG Brown Ariel
unverified
Type
Ring Laser Gyro
Settling time hr
0.5
SG Brown Sigma 40
unverified
Type
Ring Laser Gyro
Settling time hr
0.5
Meridian Mk4
unverified
IMO Compliant
ja
Meridian Mk5
unverified
IMO Compliant
ja
Ariel IV
unverified
IMO Compliant
ja
Sigma 40 Plus
unverified
IMO Compliant
ja
Yokogawa
6
CMZ-500
unverified
Settling time hr
3
IMO Compliant
ja
CMZ-700
unverified
Settling time hr
3
IMO Compliant
ja
CMZ-500D
unverified
IMO Compliant
ja
CMZ-700D
unverified
IMO Compliant
ja
CMZ-900D
unverified
IMO Compliant
ja
CMZ-900 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
60
IMO Compliant
ja
Simrad
5
HS80A FOG
unverified
Type
FOG/MEMS Heading Sensor
HS100 FOG
unverified
Type
FOG/MEMS Heading Sensor
RC42 Rate Compass
unverified
Type
FOG/MEMS Heading Sensor
HS80 Satellite Compass
unverified
Heading accuracy deg
0.25
Settling time min
5
Satellite based
ja
Multi antenna
ja
HS100 Satellite Compass
unverified
Heading accuracy deg
0.1
Settling time min
3
Satellite based
ja
Multi antenna
3
Hemisphere GNSS
4CDL / Teledyne
3KVH Industries
3iXblue
2Safran
2Kongsberg
1
Seatex MRU5+ Mk2
unverified
IMO Compliant
ja
Raytheon Anschuetz
1
Standard 22 Gyrocompass
unverified
Heading accuracy deg
0.1
Settling time min
60
IMO Compliant
ja
Sperry Marine / Northrop Grumman (USA)
1
NAVIGAT X MK1/MK2
Heading Reference
· Gyroscopic Heading Reference
Voltage: 24V DC / 115V AC
Type
Gyrocompass (Spinning Mass)
Size Range
- NAVIGAT X MK1
- NAVIGAT X MK2
Drive Type
Electric
Construction
Spinning mass gyro, digital follow-up
Common Failures & Inspection Points
- Gyro rotor bearing wear
- Follow-up motor failure
- Heading settling time issues
- Power supply unit failure
Service: Gyro bearing replacement per running hours. Annual heading verification.
Spare Parts: Sperry Marine (Charlottesville/Hamburg). Lead time: 3-6 weeks.
Tokyo Keiki (Japan)
1
TG-8000 / ES-110 Gyrocompass
Heading Reference
· Gyroscopic Heading Reference
Voltage: 24V DC / 100V AC
Type
Gyrocompass (Spinning Mass)
Size Range
- TG-8000
- ES-110
Drive Type
Electric
Construction
Spinning mass gyro
Common Failures & Inspection Points
- Gyro bearing wear
- Follow-up system issues
- Heading error from improper speed/latitude correction
Service: Standard gyrocompass maintenance. Bearing per running hours.
Spare Parts: Tokyo Keiki (Tokyo, Japan). Lead time: 3-5 weeks Asia.
Wärtsilä
1
Standard 22 / Horizon Gyrocompass
Heading Reference
· Gyroscopic Heading Reference
Voltage: 24V DC / 115V AC
Type
Gyrocompass (Mechanical / Fibre-Optic)
Size Range
- Standard 22
- Standard 22 NX
- Horizon MF
Drive Type
Electric
Construction
Spinning mass gyro (Standard 22) / Fibre-Optic (Horizon)
Common Failures & Inspection Points
- Spinning mass gyro bearing wear after 40,000+ hrs (mechanical)
- Follow-up system motor failure
- Heading settling time excessive after power interruption
- Fibre-optic coil degradation from vibration (FOG models)
- Compass card repeat signal failure
Service: Spinning mass gyro: bearing replacement every 40,000-60,000 hrs. Follow-up system check quarterly. Heading error check vs. celestial/GPS monthly. Annual survey.
Spare Parts: Wärtsilä Voyage (Kiel). Gyro rotor assembly: 6-10 weeks. Follow-up motor: 3-5 weeks.