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
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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
A.prevent fouling of the anchor
B.decrease swing of the vessel
C.prevent dragging of the anchor
D.reduce strain on the windlass
A.Chain
B.Nylon
C.Manila
D.Wire
A.Serves as a backup for the main tow hawser in case of failure
B.Provides weight and flexibility to the total tow makeup
C.Lengthens the main tow hawser to keep the tow in step
D.Distributes the towing load
A.The type of anchor and mooring line being used
B.The type of bottom in which the ship is anchored
C.A significant difference between air and water temperature
D.The chain contacting a chock or fairlead between the tensiometer and the lower swivel fairlead
最新試題
When weighing anchor in a rough sea，how would you avoid risk of damaging the bow plating （）.
You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.
If a ship has sternway，with accommodation block aft，she may settle with the wind（）.
The centre of lateral resistance is（）.
That（）is not caused by shallow water.
You are landing a single-screw vessel，with a right-hand propeller，starboard side to the dock.When you have approached the berth and back the engine，you would expect the vessel to （）.
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.
Conventional anchors are least likely to hold in a bottom consisting of（）.
You are anchoring in 16 fathoms of water．On a small to medium size vessel，the（）.
If the winch should fail while you are hauling in the anchor，what prevents the anchor cable from running out（）.