A flooded leg on a liftboat would adversely affect the vessel’s stability underway by（）.

Permanent magnetism is found in（）.

A hand held instrument used to measure distances between objects and the ship is a（）.

A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.

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

After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.

Between 1830 hrs and 1850 hrs this day，strong gusty winds（）by my vessel，in consequence of which the vessel’s four mooring lines were broken.

A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.

For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.

A fire pump may be used for other purposes if（）.