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
您可能感興趣的試卷
你可能感興趣的試題
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
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（）.
You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.
You are docking a vessel in a slip which has its entrance athwart the tide.You land the ship across the end of the pier，stemming the tide，preparatory to breaking the ship around the corner.You have one tug to assist．Where would you generally tie up the tug（）.
When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.
Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.
If a ship has sternway，with accommodation block aft，she may settle with the wind（）.
That（）is not caused by shallow water.
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（）.
You are mooring to a buoy．You should approach the buoy with the current from（）.
The centre of lateral resistance is（）.