A.Free of charge
B.Important
C.Required
D.Unnecessary
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A.identification
B.distinction
C.discrimination
D.clearly seeing
A.Chain stopper
B.Devil's claw
C.Hawse ratchet
D.Riding pawl
A.pilot ladder
B.rope ladder
C.rod ladder
D.accommodation ladder
A.on her beam
B.on her stern
C.on her bow
D.broad on the quarter
A.soft clay
B.hard mud
C.very soft mud
D.sand
最新試題
Which would you NOT use to report the amount of anchor chain out? Three shots（）.
Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.
What effect is achieved from soaking an anchor（）．
（）is not a step for anchoring preparation.
Conventional anchors are least likely to hold in a bottom consisting of（）.
When turning a ship in restricted space with a strong wind，it is normally best to（）.
You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.
A check line is（）.
What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions（）.
When weighing anchor in a rough sea，how would you avoid risk of damaging the bow plating （）.