An immersion suit must be equipped with a(n)（）.

单项选择题An emergency sea anchor may be constructed by using（）.

A.a boat bucket
B.an air tank filled with water
C.an oar and canvas weighted down
D.All of the above

单项选择题AN APPOINTMENT BETWEEN VESSELS NORMALLY MADE ON RADIO TO MEET IN A CERTAIN AREA OR POSITION defines（）.

A.Bona fide
B.Rendez-vous
C.Prima facie
D.Action in personam

单项选择题All casualties such as personnel injuries or illness，oil spills，accidental fire，collision，stranding，and unusually severe weather damage，whether at sea，in port，or in shipyard，must be promptly（）to the company.

A.spoken
B.said
C.told
D.communicated

单项选择题After you activate your emergency position indicating radiobeacon，you should（）.

A.turn it off for five minutes every half-hour
B.turn it off and on at five-minute intervals
C.turn it off during daylight hours
D.leave it on continuously

单项选择题A tug is approaching a broken down steamer in moderately heavy weather preparing to take it in tow. In most cases the（）.

A.steamer will drift stern downwind
B.tug will drift faster than the steamer
C.tug should approach stern to
D.tug should approach from downwind