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CD0017. Steering Gear

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About this collection

The Seagull CBT bank is organised into modules covering safety, shipboard operations, maintenance and other topics. Original module names and codes are retained to help you find the topic you need.

“Seagull CBT — CD0017. Steering Gear” contains 33 questions across 1 collection.

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Sample questions and answers

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Which of the following statements best describes the importance of the purity of the hydraulic oil used in steering gear?

One correct answer

  • Even small solid particles will cause wear, whilst moisture will cause corrosion✓ Correct answer
  • Provided the oil remains incompressible, the steering gear will continue to work correctly
  • Steering gear power actuators are very robust and therefore a degree of oil contamination can be tolerated
  • Provided the oil viscosity remains within acceptable limits, the steering gear will continue to work correctly
Which one of the following statements gives one of the steering gear requirements for passenger ships?

One correct answer

  • Each power unit must be capable of moving the rudder from 35° on either side to 30° on the other side in not more than 28 seconds✓ Correct answer
  • There must be two identical power units which together can move the rudder from 35° on either side to 30° on the other side in not more than 28 seconds
  • There must be oil leakage detection fitted
  • The requirements for each steering gear remains the same, even if there is more than one rudder
If there are no alarms, but the ship stops responding correctly to helm orders, which one of the following best describes the likely causes?

One correct answer

  • A failure in the remote rudder angle indication system✓ Correct answer
  • An electrical power failure in the control system
  • A leaking safety valve
  • An electrical power failure in the power actuating system
Which one of the following statements about steering gear is NOT correct?

One correct answer

  • A main steering gear must be able to move the rudder from 30° on either side to 30° on the other side in less than 28 seconds✓ Correct answer
  • A main steering gear must be able to move the rudder from 35° on either side to 35° on the other side
  • An auxiliary steering gear must be able to move the rudder from 15° on either side to 15° on the other side
  • Ships with more than one rudder do not need an auxiliary steering gear if they are navigable with one rudder
For an electro-hydraulic steering gear, if the stand by pump fails to start following a failure of the running pump, which one of the following best describes the likely cause?

One correct answer

  • The pump has not been set to standby or its power supply has been switched off✓ Correct answer
  • There has been a significant loss of hydraulic fluid
  • There is a valve shut somewhere in the system
  • The starting current has caused overload

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