TSS Meridian Subsea Gyrocompass

Available as:
  • Rental
  • Sale (ex rental)

TSS Meridian Subsea Gyrocompass – Available for rental, hire and ex-rental purchase from Ashtead Technology.

The Meridian Subsea Gyro provides a reliable, maintenance free operation with a MTBF in excess of 30,000 hours. The high accuracy heading output can be maintained for turn rates in excess of 200° per second making the system ideal for operation in even the most hostile subsea environments. The design of the Meridian Subsea is simple yet highly robust and the fast spin-up time of less then 45 minutes allows for vastly increased efficiencies over earlier mechanical gyro technologies.

The Meridian Subsea may be upgraded to the Subsea RP with addition of a Roll Pitch Module. This enables output of roll and pitch data with 0.1° accuracy making the unit useful in a wider variety of subsea control, installation or monitoring applications.

Sale Information
Ex-rental unit for sale - sold as seen. Contact us for information.

Key features

  • Maintenance-free DTG element
  • Dynamic heading accuracy of +/- 0.6ᄚ
  • Static heading accuracy of <0.25ᄚ
  • <45 minutes settling time
  • MTBF of 30,000 hours
  • Depth rated to 3000m
  • Very high turn rate of 200ᄚ per second
  • Configuration via PC interface S/W

Technical specifications

Settle point0.25°
Static accuracy<0.25° RMS secant latitude
Dynamic accuracy<0.6° secant latitude (Scorsby and Intercardinal motion tests)
Follow up speed200°/sec
Settling time<45 minutes, to within 0.7°
Latitude input and Speed inputAutomatic-via RS232 or RS422, NMEA 0183 from SDC software
Latitude compensation80N to 80S
Speed compensation0 - 20 knots
Operating temperature0°C to 45°C(to ISO8728) -15°C to 55°C (with reduced accuracy
Storage Temperature-25°C to 80°C
Gimbal Limits+/-45° pitch and roll
Shock Survival10g
Mean time before Failure30,000 hours
Input Voltage24VDC (18-36 VDC)
Depth Rating3000m


Dimensions516mm x 215mm20.31 x 8.46""
Weight in air28.6 kg75 lbs