A wooden plug fitted tightly in the vent of a damaged tank m

The two courses of action if the underwater hull of a ship is severely damaged are to plug the openings and to ______.

A.dewater the compartment

B.establish and maintain flooding boundaries

C.secure power to the compartment

D.counter flood to maintain even keel

Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?

A.Each vent for the tank must be equal to the area of the tank filling line

B.The tanks must be protected by overflows

C.The total area of the vents or the overflow shall be at least equal to the area of the fill line

D.There must be twice as much vent area as the area of the fill line

Which of the following is NOT mentioned in this passage?

A.There may be oil vapor in the engine room

B.Pipes and fittings may be damaged if explosion takes place

C.The cooler should be drained

D.Bursting caps must be fitted

What is a cofferdam ________．

A.Tube fitted to an ullage hole

B.Area the product is loaded into

C.Void or empty space separating two tanks

D.Opening in the deck used for cleaning a tank

Every new crude oil tanker of 20 000 tons deadweight and above shall be fitted with a cargo tank cleaning system using ______．

A.Hot water

B.Cold water

C.Chemicals

D.Crude oil washing

The wooden plug inserted in the vent of a damaged tank should be removed if you are going to ______.

A.pump from the damaged tank

B.fight a fire

C.abandon ship

D.use the crossover system

The wooden planking that protects the tank top from cargo loading is called ______．

A.Ceiling

B.Shores

C.Frames

D.Toms

An inert gas system installed on a tanker is designed to ______.

A.aid in the stripping and cleaning of cargo tanks

B.increase the rate of discharge of cargo

C.force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere

D.lower the oxygen levels inside cargo tanks，making explosion nearly impossible

Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with ______．

A.Gooseneck vents and flame screens

B.Pressure-vacuum relief valves

C.Branch vent lines and a vent header

D.Forced draft blowers