A series of trays with sieves that vibrate to remove cuttings from the circulating fluid in rotary drilling operations is called the（）.

A single line of position combined with a dead-reckoning position results in a(n)（）.

A semisubmersible with a negative GM flops to an angle of（）.

A vessel transferring cargo while underway is classified by the Rules as a vessel（）.

Fearing damage from either or both of the above incidents，the Master now（）me this note of protest，reserving to himself the right to extend same at time and place convenient．

A seaman assaults the Second Mate and injures him with a beer bottle while the ship is at sea. The incident is logged in the Official Logbook. In subsequent suspension and revocation proceedings against the seaman，according to the regulations，（）.

A single barometric pressure reading of 28.60 indicates（）.

A safety feature provided on all inflatable liferafts is（）.

A shepherd’s crook is used to（）.

How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）