Thruster fault

Considerations from the above event:

  • All available means should be used to identify the faulty thruster and then shut it down as deselecting it from the DP system might not be effective.
  • Depending on the time frame, it is recommended that the bulk transfer hose is disconnected prior to engaging manual control of thrusters.
  • It should be noted that on a vessel that utilises main propellers for DP, pitch should fail safe to zero. This is because the second propeller, working astern, would not be able to compensate for the erroneous thruster¬†working ahead.