NAVIGAT X MK 1

Digital Marine Gyrocompass System

Gyrocompass Standard Features

  • Comprises one single unit
  • Control and display unit in front cover with 4-digit heading display and 6 operating keys
  • Easy to install and easy to service
  • High-speed follow-up system 100°/sec
  • Rate-of-turn output
  • Automatic static north speed error correction
  • Integrated TMC interface
  • Compass monitor function
  • Highly accurate digital heading data transmission by shaft encoder
  • Self-synchronizing repeater compasses
  • ±180° electronic alignment error correction in setup program
  • Can be installed at any location
  • Will drive a maximum of 12 analogue repeaters
  • 180° heading offset function for shuttle vessels
  • Seven independent serial outputs RS 422 and NMEA 0183
  • Two independent 6 steps/degree heading outputs (0.5 A)
  • Complies with IMO regulations A.424(IX), A.574(14), A.821(19) - HSC (High-Speed Craft) and ISO 8728
  • Outputs to Voyage Data Printer:
  • - Heading
    - Heading source gyro/magnetic
    - Rudder angles of two independent rudders

  • Complies with DNV-W1
  • Insensitive to horizontal acceleration
  • Twin rotors and liquid damping system eliminates latitude error
  • High MTBF (mean time between failures) and low power consumption
  • All repeater compasses with serial interface
  • Automatic emergency power changeover and status alarm
  • Gyro system remains north stabilized during power interruptions of up to 3 minutes
  • Single point suspension of the gyrosphere container eliminates the well-known adverse effects associated with gimbals
  • Monitoring and alarm functions for all voltages, gyroscope current and follow-up system




  • Gyrocompass Optional Features

  • Automatic dynamic north speed error correction.
  • Remote control unit Compass Monitor NAVITWIN III for additional operational convenience.
  • Magnetic compass with fluxgate
  • Analogue and digital repeaters
  • Voyage Data Printer NAVIPRINT
  • Conventional, adaptive and high-speed code autopilots
  • Rudder angle feedback units
  • Electromagnetic speed log
  • Electronic compass with NMEA 0183 interface


  • Gyrocompass Inputs & Outputs for all Basic Systems

    Inputs
  • Position lat/lon in NMEA 0183*
  • Speed in NMEA 0183 or 200 pulses/nm*
  • Rudder angle, analogue
  • Rate-of-turn time constant from external selector
  • Sine / cosine from magnetic compass fluxgate
  • Heading in NMEA 0183 from electronic compass
  • Steering mode status (auto/man) from selector switch
  • Power supply 115 - 230 VAC and/or 24 VDC


  • Outputs
  • 12 heading outputs in NMEA 0183 to serial repeaters
  • 2 outputs NMEA 0183 speed, magnetic heading
  • 2 outputs RS 422 gyro heading, ROT, lat/lon
  • 1 output heading, ROT in RS 422 FAST
  • 1 output heading, ROT in RS 422 SUPER FAST
  • 1 output status signal
  • 1 rate of turn
  • 1 output RS 422 to Voyage Data Printer with heading, rudder angle, time, lat/ lon, steering mode, speed
  • 1 output status gyro/magnetic
  • 2 6 steps/° heading outputs (0.5 A)
  • *Required for automatic north speed error correction only.




    Northrop Grumman Sperry Marine homepage