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
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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
A.gear extending from the side or stern
B.gear that restricts maneuverability
C.less than 50 percent trolling lines
D.None of the above
A.The faying surfaces are coated with white lead (or similar product) before the rivets are set
B.A sealing weld bead of 1/8 or less pitch is run along the plate edge
C.The plate edge is split close to an adjacent plate and mechanically forced into contact with the adjacent plate
D.A properly riveted joint will be watertight; any leakage is stopped by setting up on the rivets
最新試題
Which statement is TRUE concerning hawser towing? （）
The BEST way to steer a twin-screw vessel if you lose your rudder is by using（）.
Which statement concerning an automatic towing engine is FALSE? （）
To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.
When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）
The pitch of a propeller is a measure of the（）.
If your vessel has a GM of one foot and a breadth of 50 feet，what will be your full rolling period? （）
The distance that a ship moves forward with each revolutionof its propeller，if there is no slip，is called（）.
The forward movement of a ship in one revolution of its propeller is measured by（）.
The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.