Details of coast radio stations and radar stations can be found in（）.

单项选择题A current perpendicular to a vessel’s track has the greatest effect on the vessel’s course made good（）.

A.at high vessel speeds
B.at low vessel speeds
C.in shallow water
D.in deep water

单项选择题When compared to air temperature,which factor is most useful in predicting fog?（）

A.Vapor pressure
B.Dew point
C.Barometric pressure
D.Absolute humidity

单项选择题Radiation fog is more commonly encountered in（）.

A.spring
B.later winter
C.autumn
D.end of summer

单项选择题Maintenance of charts and nautical publications up to date is a statutory requirement under the（）Convention.

A.STCW
B.MARPOL
C.SOLAS
D.ISM

单项选择题You are in charge of a stand-on vessel in a crossing situation.The other vessel is 1.5 miles to port.You believe that risk of collision exists.You should（）.

A.take avoiding action immediately upon determining that risk of collision exists
B.immediately sound the danger signal
C.take avoiding action only after providing the give-way vessel time to take action ,and determining that her action is not appropriate
D.hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision