The NAVIGAT 3500 fiber optic gyro compass model has a clear advantage over spinning mass gyro compass models as it has no moving parts, no maintenance during service life, high dynamic accuracy, no north speed error, a short settling time and output for roll and pitch.

Safety is increased as a result of the high dynamic accuracy associated with the lack of north speed error. This is particularly valuable for high-speed craft at high latitudes during frequent maneuvers.

NAVIGAT 3500 CompassNet specifications:

  • Sensor performance:

                   Heading                          ≤ 0.15 deg secant latitude RMS
                   Roll/Pitch angle            ≤ 0.1 deg RMS
                   Rate of Turn                   ≤ 0.06 deg/ min
                   Heave                              0,1 m or 10% (whichever is higher)
                   x/y rate                           ≤ 0.06 deg / min

  • High speed follow up system 250°/sec, all axes
  • FOG technology with High Mean Time Between Failure (MTBF) of 150,000 hrs and high lifetime
  • Power supply: 24 VDC main and back-up
  • Common User Interface Device NAVITWIN V to setup entire compass system
  • 12 sensor data outputs, configurable to user needs, incl. Printer output functionality
  • 8 repeater ports providing serial sensor data and power supply for heading repeaters
  • One analogue rate-of-turn output
  • One bi-directional INS compliant interface acc. IEC 62924-2
  • Fluxgate or serial input for connection of magnetic compass
  • 8 serial inputs for GNSS, Speed Log, Rudder Angle, Set Heading
  • All required alarm interfaces, serial and dry contact
  • DNV-GL and BV MED type approved Heading Sensor (standard and high speed application) and Rate of Turn Indicator System (acc. ISO 8728, 16328, 20672)


For more information about Northrop Grumman Sperry Marine’s NAVIGAT 3500 CompassNet system, please contact us.