A.windward side
B.leeward side
C.safe semicircle
D.dangerous semicircle
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A.is used mostly by towing vessels
B.has a maximum depth of 14 feet (4.3 meters) at MHW
C.West Gap has a controlling depth of 24 feet
D.is entered through the East Gap or the West Gap
A.installing rat guards on the mooring lines when in port
B.keeping foods protected and avoiding the accumulation of garbage
C.eliminating possible living spaces for rats when the ship is constructed
D.trapping and/or poisoning the rats
A.Greenish
B.Bluish
C.Grey
D.Grey-white
A.around the rudder and screws
B.completely around the vessel
C.to leeward of the vessel
D.to windward of the vessel
A.11 seconds
B.15 seconds
C.20 seconds
D.22 seconds
最新試題
What indicates that a tropical cyclone may be within 500 to 1，000 miles of your position?（）
Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）
Which statement is TRUE of a stiff vessel? （）
Which statement concerning an automatic towing engine is FALSE? （）
One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
Which statement concerning maneuvering in restricted visibility is FALSE?（）.
The forward movement of a ship in one revolution of its propeller is measured by（）.
The time required to incline from bow down to stern down and return to bow down again is called（）.
The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.
Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? （）