A.A hard hat
B.A long sleeve shirt
C.Gloves
D.Goggles
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A.One shot of chain for every ten feet of water
B.One shot of chain for every fifteen feet of water
C.One shot of chain for every thirty feet of water
D.One shot of chain for every ninety feet of water
A.It allows the bottom soil to consolidate
B.It gives the palms time to trip the anchor
C.It stabilizes the mooring system
D.It lubricates the anchor for better tripping
A.the center of the hydrodynamic forces acting on the underwater hull to resist the effect of the wind
B.the point of influence of wind on the ship
C.the pivot point
D.the point on the ship's above-water structure upon which the whole force of the wind can be considered an act
A.turning ability deteriorates
B.virtual mass increases
C.the effect of the propeller transverse thrust on yaw alters
D.the ship will turn with its head towards the wind
A.obscured
B.darkened
C.greyed
D.delighted
最新試題
Which safety check（s）should be made before letting go the anchor（）.
You are proceeding down a channel and lose the engine（s）.You must use the anchors to stop the ship.Which statement is true（）.
What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions（）.
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 （）.
You are mooring to a buoy．You should approach the buoy with the current from（）.
A ship will always want to settle into a position where（）.
When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.
You are anchoring in 16 fathoms of water．On a small to medium size vessel，the（）.
Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.
Conventional anchors are least likely to hold in a bottom consisting of（）.