单项选择题
If a severe leak develops in the electro-hydraulic steering gear unit is necessary when（）
A.Loss of vessel steering
B.Overheating of the gyrocompass
C.Jamming of the six-way vale
D.Jamming of the follow-up device
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相关考题
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单项选择题
A power failure in the hydraulic system of a compact type steering gear would cause the rudder to（）
A.swing 35°right or left
B.remain locked in its last position
C.move to the mid-ship position automatically
D.jam against the rudder emergency stops -
单项选择题
According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?（）
A.6 knots
B.7 knots
C.9 knots
D.12 knots -
单项选择题
According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）
A.7 knots
B.10 knots
C.15 knots
D.20 knots
