When anchoring,it is a common rule of thumb to use a length of chain（）.

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• During severe storms when survival becomes a major concern，it may become necessary to relieve high anchor tensions on the windward side of the unit by（）.

  A . deballasting the rig B . ballasting the rig C . paying out cable on the windward side D . paying out cable on the leeward side

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• When a line is subject to wear where it passes through a mooring chock，it should be（）.

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• A vessel is described as a two compartment vessel when it（）.

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• A vessel is（）when she is not at anchor，made fast to the shore，or aground.

  A . underway B . making way C . dead in the water D . a power driven vessel

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• When is an implicit anchor created?（）

  A . When an object is enclosed by another object.  B . When a page break after pagination property is enabled.  C . When a link is created between two objects.  D . When a keep with anchoring object pagination property is enabled.

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• In rough weather，when a ship is able to maneuver，it is best to launch a lifeboat（）.

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• Which vessel，when anchored at night，is NOT required to show anchor lights?（）.

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• A chain bridle is used when towing astern because it（）.

  A . is easy to connect B . provides an effective catenary and absorbs shock due to its weight C . makes rigging a swivel unnecessary D . prevents the tow from yawing by the drag of the chains in a seaway

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• Ammonia when used as a refrigerant is valuable because of its high efficiency, it is however （）.

  A . toxic B . flammable C . explosive D . all of the above

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  A . pelican hook B . connecting link C . shackle D . retaining hook

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