When the steering gear is in operation, you should （）.

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• The main steering gear must be able to steer the ship at maximum ahead service speed and be capable at this speed, and at the ships deepest service draught, of putting the rudder from 35 degrees on one side to 30 degrees on the other side within no （）.

  A . more than 28 seconds B . more than 60 seconds C . less than 28 seconds D . less than 60 second

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• The purging of air from an elector-hydraulic steering gear unit is necessary when（）

  A . changing over to hand pump operation B . engaging the trick wheel C . the system has been filled with new oil D . the rudder angle indicator does not match the helm positio

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• When steering on autopilot which of the following input conditions may NOT have an effect on the control of the steering gear（）.

  A . Non-follow-up B . Rudder adjustment C . Weather adjustment D . All the above may be activated

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• In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）

  A . When the helm is at any angle other than amidships B . When the six-way valve is opened C . When the ram relief valves lift D . When the redder angle is different from the position of the helm

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• With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect?（）

  A . Only one pump should be used at any time B . The ship speed should be reduced to 70% of the normal C . Watch keeping of the steering gear should be increased D . Limitations of the steering gear should be logged but the bridge need not be informed

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• The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to （）.

  A . transmit the rudder angle to the bridge indicator B . prevent the control linkage from striking the stops when hard over C . automatically purge all entrained air from the system D . send hydraulic signals to the receiving unit

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• The control rod of a steering gear pump is attached at its outer end to （）.

  A . the hunting gear B . the rudder stock C . the rudder controller D . the feedback unit

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• According to the way the steering gear is operated, the steering gear may be divided into: hand - steering, （） and automatic steering.

  A . hydraulic steering B . follow-up steering C . remote control steering D . air controlled steering

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• When dropping anchor，you are stationed at the windlass brake．The most important piece（s）of gear is（are）（）.

  A . A hard hat B . A long sleeve shirt C . Gloves D . Goggle

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• Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.

  A . regulating the oil flow with the six-way valve B . moving the automatic differential valve C . moving the receiving tele-motor which regulates the two-way valve D . varying the angle of a tilting box or eccentricity of a floating ring

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• When turning the engine with turning gear, you should keep the indicator cocks （）.

  A . attached to the indicators B . opened C . closed D . broke

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• When steering by autopilot,how often should the steering be checked?（）

  A . 12 times on each watch B . When time allows C . At least once a watch D . No checking is necessary

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• When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）

  A . The six-way valve opens B . The steering service pump motor is stopped C . The follow-up gear takes the pump off stroke D . The cylinder relief valves bypass oil to the suction side the pum

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• When there is no movement of the rams on an electro-hydraulic steering gear, the tilting box of the running pump is （）.

  A . set for maximum torque B . on the purge and vent stroke C . in the neutral position D . rotating backward

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• When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）

  A . maintain alignment when the ship’s hull is working in heavy seas B . ensure engine vibrations correspond to the natural frequency of the hull C . permit the engine to expand away from the driven equipment as the engine heats up and expands D . maintain engine thrust bearing clearance

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• The （） in the steering gear system provides the force.

  A . control equipment B . power unit C . transmission mechanisms D . fittings and pipeline

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• The follow-up gear on an electro-hydraulic steering gear（）

  A . relieves excessive fluid pressure B . takes the pump off stroke when the desired rudder angle is attained C . synchronizes wheel position with the rudder position D . returns the rudder to midposition when the wheel is released

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• The required rudder angle is transmitted hydraulically or electrically from the steering wheel at the bridge to the （）at the steering gear, just above the rudder.

  A . transmitter B . tele-motor C . hydraulic ram D . hydraulic cylinder

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• When air becomes trapped in the hydraulic fluid of a steering system, the （）.

  A . rudder will respond sluggishly B . hydraulic rams will over-speed C . sight glass will show bubbles D . ram relief valves will lift

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• When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.

  A . ram relief valves bypass oil to stop rudder movement B . six-way valve shifts to the neutral flow position C . steering pump electric motor is de - energized by the transfer switch D . follow-up gear takes the hydraulic pump off stroke

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• The test of a towing vessel’s steering gear control system includes each item EXCEPT（）.

  A . a test from the alternative power supply，if installed B . timing the movement of the rudder from hard over to hard over C . verification that the rudder angle indicator shows the actual position of the rudder(s) D . visual inspection of the steering linkage

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• An interlock in the remote operating valve line stops the valve （） when the engine turning gear is engaged.

  A . to open B . opening C . open D . opened

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• In an electro-hydraulic steering gear, any change in relative position between the synchronous receiver and the follow-up gear will result in（）

  A . the pump going to full stroke B . closing of the six-way valve C . driving the rams up against the stops D . a corresponding slowing or increasing of the pumped flow rate

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• （）Turning the steering wheel turns the steering shaft to which a worm gear is attached within the steering gear box.

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