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()provides a paper trace of course steered by the vessel against time.
A . The echo sounder
B . The radar
C . The course recorder
D . The direction finder
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Air trapped in the hydraulic fluid of a steering system may be indicated by()
A . the steering pumps overspeeding
B . a jammed open relief vale
C . a constantly occurring improper rudder response
D . excessive ram pressure
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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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Generally,you can best keep a vessel under steering control when the vessel has().
A . headway
B . sternway
C . no way on,with engines stopped
D . no way on,with engines full ahead
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The hand steering is a method by which the motion of the rudder is controlled with ().
A . a motor-driven steering wheel
B . a pneumatic steering wheel
C . a hand-driven steering wheel
D . an electric steering wheel
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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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Air trapped in the hydraulic fluid of a steering system would be indicated by()
A . an improper rudder response
B . hammering noises in the equipment or transmission lines
C . popping or sputtering noises
D . all the above
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The word “critical” in the sentence “This is a critical period as any loss of propulsion, or steering, can lead to collision, grounding, or other damage to the ship” can be best replaced by ().
A . A.dangerous
B . B.best
C . C.bad
D . D.important
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When the steering gear is in operation, you should ().
A . check hydraulic oil levels every hour
B . check the rams for overheating
C . check for excessive oil leakage from rams
D . drain water from telemotor cylinders each watch
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Course directed by the 0SC or CSS to be steered at the beginning of a search is().
A . original course
B . initial course
C . final course
D . designated course
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If one hydraulic pump of an electro-hydraulic steering unit falls, the vessels steering can be initially and best maintained by using the ().
A . trick wheel
B . accumulator
C . standby pump
D . telemotor
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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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In an electro-hydraulic steering system, under movement is maintained in close synchronization with the steering wheel position by means of the ().
A . trick-wheel
B . follow-up control
C . six-way valve
D . Rapson slide
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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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Course directed by the OSC or CSS to be steered at the beginning of a search is().
A . Original course
B . Initial course
C . Final course
D . Designated course
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When steering a tow downstream around the shape of a sand bar,and staying on the proper side of the buoys,an operator should be cautious of().
A . eddies under the bar
B . swift current under the bar causing loss of control
C . cross-currents pushing the tow away from the bar
D . cross-currents pushing the tow into the bar
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In an elector-hydraulic steering system, rudder shock is limited by()
A . a differential gear
B . return springs
C . a hydraulic accumulator
D . relief valve
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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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In an electro-hydraulic steering system, rudder movement is maitained in close synchronization with the steering wheel position by means of the ______.
A.trick wheel
B.follow-up control
C.six-way valve
D.Rapson slide
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0271The word “critical” in the sentence “This is a critical period as any loss of propulsion, or steering, can lead to collision, grounding, or other damage to the ship.” can be best replaced by _____.
A.dangerous
B.best
C.bad
D.important