A dual-scale Steering Repeater with a fine resolution of one tenth of a degree. Touch panel controls


The MD68HR from MARINE DATA is a dual-scale NMEA-based Steering Repeater. Digital heading data (ship’s heading) may be displayed and monitored at any location on a vessel. The inner dial has a resolution of one tenth of a degree.

When multiple heading sources are available in the heading data (e.g. True and Magnetic), the MD68HR allows the user to select the heading source and indicates which heading source is in current use.

Compact and rugged, the MD68HR Steering Repeater offers a heading repeater solution for locations where the available space is limited and may be either bulkhead or panel mounted. Finished in jet black to complement other marine navigation equipment.

The MD68HR Steering Repeater from MARINE DATA: flexible in application, easy to install and simple to maintain.


  • Dual Scale 36:1 precision concentric dial display suitable for Vessel Steering
  • Main and Emergency power supplies; with monitoring of both
  • Dual NMEA inputs for two compasses shared on the same physical connector
  • Automatic selection and prioritisation of NMEA heading data type
  • Prioritisation of heading type: HDT (true), HDG (magnetic + variation), HDM (magnetic)
  • Automatic warning of loss of valid heading data and automatic detection of a previously lost heading data type without requiring a reset
  • Local and Remote dimming control


  • The MD68HR Steering Repeater displays True or Magnetic Heading Data transmitted from marine equipment compatible with NMEA 0183 (IEC 61162-1) (Gyro compass, TMC, EMC, GPS Compass etc.)
  • High Resolution 36:1 Dual Scale Display for Vessel Steering


  • Weight: 2.0 kg (with bulkhead mounting bracket)
  • Dimensions: H 220 mm W 235mm; D 78 mm Fascia 192 mm x 192 mm x 6 mm Outer dial Ø 164 mm; Inner dial Ø 103 mm
  • Mounting: Bulkhead or Panel mounted
  • Connections: 1 x data cable to 15-pin D-sub plug
  • Construction: Aluminium alloy enclosure
  • Finish: RAL9005 Jet Black; fine texture


  • Power Supply: 24 V dc 8 W nominal (18-31 V dc)
  • Data Input: Digital RS422; NMEA 0183 protocol 4800 / 9600 / 19200 / 38000 Baud (auto-sensing)
  • Data Sentences: THS, HDT, HDG and HDM; detected on start‐up in descending order of priority
  • Cable: 2.5 m multicore data cable


  • Performance: ± 0.01° accuracy
  • Follow-Up Rate: >20° per second
  • Display: Concentric dual scale 36:1 rotating dials
  • Dial Resolution: Outer scale marked at 1°, 5°, 10°, 45°; Inner scale marked at 0.1°, 1°
  • Dial Illumination: LED array with local and remote dimming control. Red tint
  • Alarm: Off Course / Loss of Data / Power Supply Failure: Audible sounder and LED indicator
  • Heading Type: LED indicator for heading source type: Gyro Compass / Magnetic Compass
  • MTBF: 30,000 hours


  • IP rating: IP54
  • Operating temp: -15°C to +55°C
  • RoHS: Compliant
  • Compass: Safe Distance 100 cm


  • Conforms with: IEC 60945; IEC 62288; IEC 61162-1; ISO 8728:1997; IMO Resolution A1021 (26)
  • Type Approval: Germanischer Lloyd (GL)


  • Supplied: Panel Mounting Kit
  • Option: Bulkhead Mounting Kit
  • Option: Custom Paint Finish