A.also called decks
B.vertical transverse plates connecting the vertical keel with the margin plates
C.large beams fitted in various parts of the vessel for additional strength
D.found in passenger and berthing spaces only
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A.frames to which the tank top and bottom shell are fastened on a double bottomed ship
B.transverse members of the ships frame which support the decks
C.longitudinal beams in the extreme bottom of a ship from which the ships ribs start
D.longitudinal angle bars fastened to a surface for strength
A.floors
B.intercostals
C.stringers
D.tank top supports
A.prevent stress concentration in the bulwark
B.permit easy jettison of deck cargo in an emergency
C.provide opening through the bulwarks for mooring lines
D.allow water shipped on deck to flow off rapidly
A.oil from flowing out of the tank vent
B.air from entering the tank vent
C.vapors from leaving the tank vent
D.flames on deck from entering the tank vent
A.any certificated tankerman
B.the master of the vessel
C.the officer of the watch
D.the person designated as person in charge
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（）is on the panel of radar.
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
The loading of the ship must be done in accordance with（）.
Manoeuvring information can not be obtained from（）.
According to the relevant regulation, lifeboat should be powered by（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
The helm command PORT TWENTY means（）.
A tide is called diurnal when（）.
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.