A.on her beam
B.on her stern
C.on her bow
D.broad on the quarter
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A.soft clay
B.hard mud
C.very soft mud
D.sand
A.in many places a counter current flows in opposition to the main current close to the bank
B.current can vary with depth of water and large deep draught ships can experience different current effects at differing parts of the hull tend to turn to the wind
C.as speed is reduced，the increased proportion of the ship's vector which is attributable to current will set the ship close to obstructions
D.when close to the berth in a head current，there is a danger that flow inshore of the ship becomes restricted and the ship is subject to interactive forces
A.the pivot point and point of influence of wind in are not in alignment
B.the pivot point and point of influence of wind in are in alignment
C.the point of influence of wind moves depending on the profile of the ship presented to the wind
D.the ship steams slowly in rough seas
A.A safety line attached to a man working over the side
B.Used to measure water depth
C.Used to slow the headway of a barge
D.Used to measure the overhead height of a bridge
A.great circle
B.small circle
C.large circle
D.general circle
最新試題
You are entering port and have been instructed to anchor，as your berth is not yet available.You are on a SW’ly heading，preparing to drop anchor，when you observe the range lights as shown on your starboard beam.You should（）.
When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.
Conventional anchors are least likely to hold in a bottom consisting of（）.
Your vessel is anchored in an open roadstead with three shots of chain out on the port anchor.The wind freshens considerably and the anchor begins to drag.Which action should you take FIRST（）.
When turning a ship in restricted space with a strong wind，it is normally best to（）.
You are proceeding down a channel and lose the engine（s）.You must use the anchors to stop the ship.Which statement is true（）.
If a ship has sternway，with accommodation block aft，she may settle with the wind（）.
You are riding to a single anchor.The vessel is yawing excessively.Which action should be taken to reduce the yawing（）.
Which safety check（s）should be made before letting go the anchor（）.
Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.