EVENTS:Sea Asia, 9-11th April 2019Sea Asia, 9-11th April 2019

MD310TS Emergency Dual Rudder Angle Telegraph System

The MD310TS Dual Rudder Angle Telegraph System is an emergency system which derives its power from a safeguarded backup DC power supply.

The MD310TS Dual Rudder Angle Telegraph System is an emergency system which derives its power from a safeguarded backup DC power supply. The MD310S system conveys angular steering commands from the wheelhouse to the steering crew located at a remote station in the vessel’s steering gear compartment. In this way, the vessel can be safely steered when the main power has failed.

One MD310S Single Head Unit is located in each of the two steering compartments and one MD310T Twin Head Unit is located at the command station in the wheelhouse.

Steering commands are displayed in degrees by a moving pointer (also known as a bug) on the remote angular display unit situated in the steering compartment. The steering crew can then comply by moving the rudders to the required angular position by hand and then respond to this by confirming the response angle and pressing the Alert button.

The MD310TS Dual Rudder Angle Telegraph System from Marine Data: Easy to install and simple to maintain.

Special Features

  • Twin-Head command station unit for space-saving
  • Simple, ultra-reliable design
  • Rugged marinised construction
  • Dimming control


  •  The Marine Data Dual Rudder Angle Telegraph System is an emergency backup system. It is designed to provide a simple and reliable means of steering a vessel by hand in the event of a catastrophic main power systems failure at sea

Related Products & Systems


  • Weight: MD310S 1.65 kg; MD310T 3.0 kg
  • Dimensions: MD310S: H 170 mm; W 186 mm; D 135 mm;
    Fascia 144 x 144 x 6 mm; Dial Ø 118 mm
    MD310T: H 144; W 288; D 117.5 (excl. cable);
    Dials Ø 118 mm
  • Mounting: MD310S Single Head Unit: Panel or Bracket Mounted
    MD310T Twin Head Unit: Pane Mounted Only
  • Connections: Captive cable
  • Construction: Aluminium alloy enclosure
  • Finish: RAL7040 Window Grey, semi-gloss


  • Power Supply: MD310S: 24 V dc (18-32 V) 4 W nominal
    MD310T: 96 – 260 V ac
  • Data input: Variable dc voltage; alert signal
  • Cable: 5 m multicore captive; bare tails


  • Performance: ± 2.5° accuracy
  • Follow-Up Rate: 6° per second
  • Display: Moving pointer against a fixed angular displacement card
  • Resolution: Marked in units of 1º with an angular range of 40º port and 40º starboard
  • Illumination: Red tint; dimmable
  • MTBF: 30,000 hours


  • IP rating: IP54
  • Operating temp: -10°C to +70°C
  • Humidity: 0% – 95% at 40ºC
  • Vibration:
    • 00 Hz – 12.5 Hz ±1.60 mm displacement
    • 5 Hz – 25.0 Hz ±0.38 mm
    • 0 Hz – 50.0 Hz ±0.10 mm
  • Compass: Safe Distance 100 cm


  • Conforms with: IEC 60945

Additional Information

  • Supplied: Bulkhead Bracket Mounting Kit (x2)
  • Supplied: MD96/10 Junction Box (x4)
  • Supplied: MD310T Twin Head Unit (x1)
  • Supplied: MD310S Single Head Units (x2)

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