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
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A.great circle
B.small circle
C.large circle
D.general circle
A.anchoring in the Mediterranean
B.docking stern to a berth
C.docking bow to a berth
D.anchoring in a strong current
A.To take off the covers from the hawse pipes and clear the spurling pipes
B.To make sure that the windlass is out of gear and the brakes are on
C.To turn the windlass over slowly
D.To inform the engine room to ensure that deck power and water are off
A.the same ratio
B.more chain for each fathom of depth
C.less chain for each fathom of depth
D.two anchors with the same ratio of chain
A.Four times the depth of water
B.Two and one-half times the depth of water
C.Five to seven times the depth of water
D.Fifteen times the depth of water
最新試題
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.
A（）is the intersection of the surface of a sphere and a plane passing through the center of the sphere.
When turning a ship in restricted space with a strong wind，it is normally best to（）.
What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions（）.
A ship will always want to settle into a position where（）.
A check line is（）.
A “Mediterranean moor” should be used when（）.
When weighing anchor in a rough sea，how would you avoid risk of damaging the bow plating （）.
You are anchoring in 16 fathoms of water．On a small to medium size vessel，the（）.
Conventional anchors are least likely to hold in a bottom consisting of（）.