DRAWING C03 0017/0118

According to SOLAS, what special steering gear requirement must tankers above 10,000 tonnes meet that other ships do not require?

• There must be oil leak detection, and steering capability must be regained within 45 seconds following the loss of one power actuating system

• Steering capability must be regained within 60 seconds following an oil leak

• There must always be full duplication of components up to the rudder stock

• There must be two or more identical power units

According to the SOLAS rules the steering gear should be capable of being recharged with hydraulic oil from a fixed storage tank. What is the main reason for this?

• To ensure that the steering gear can be rapidly recharged with clean hydraulic oil in the event of a leak from the system

• Because a steady leakage of oil is to be expected from some steering gears and having a fixed storage tank reduces the time taken for topping up

• To cut down the fire risk and reduce the risk of spillages

• To ensure that the correct grade of oil is always used

According to the SOLAS rules, when must ships fitted with more than one steering gear power unit have at least two of these units running?

• In all cases, in areas where navigation demands special caution

• In areas where navigation demands special caution, unless each individual power unit can perform as a main steering gear

• In areas where navigation demands special caution, unless the system is arranged to change over automatically within 45 seconds of a failure to either power unit

• When entering or leaving port, or at the discretion of the Master

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?

• The pump has not been set to standby or its power supply has been switched off

• The starting current has caused overload

• There has been a significant loss of hydraulic fluid

• There is a valve shut somewhere in the system

For an electro-hydraulic steering gear, if there is a lot of movement of the wheel in hand steering mode before the steering gear responds, which one of the following best describes the likely causes?

• Air in the hydraulic control system

• Excessive wear in the hydraulic pumps

• Loss of one phase of the electrical supply to the pump motor

• Overheating of the hydraulic fluid

If there are no alarms, but the ship stops responding correctly to helm orders, which one of the following best describes the likely causes?

• A failure in the remote rudder angle indication system

• A leaking safety valve

• An electrical power failure in the control system

• An electrical power failure in the power actuating system

In the event of an oil leak on a steering gear fitted with an automatic change-over system, at what point should the system be automatically split into two?

• When a main low level alarm operates on either hydraulic oil tank

• At the same time as one of the pumps is automatically stopped

• The system will be split into two in the event of any alarm sounding

• When the final low level alarm on either hydraulic oil tank operates

Requirements for steering gears are given in which one of the following publications?

• SOLAS

• COLREG

• ISM Code

• MARPOL

The steering mode in which the rudder angle is pre-set manually and kept in position automatically, is called?

• Follow up mode

• Auto pilot mode

• Hand steering mode

• Non follow up mode

What is the most likely cause of the hydraulic lock alarm occurring on a steering gear system?

• A failure in the control system such as a directional valve sticking open

• A failure of one of the hydraulic pumps

• Failing to purge the system of air

• Having both hydraulic pumps running at the same time