You are to（）the convoy at 1745 hours.

单项选择题A tug would NOT assist a ship to steer if the tug is made up to the large vessel（）.

A.by a tow line ahead of the vessel
B.forward on either bow of the vessel
C.approximately amidships of the vessel
D.on the vessel's quarter

单项选择题It is an（）condition precedent in every voyage charter-party that the ship shall proceed on the voyage without departure from her proper course.

A.implemented
B.implied
C.impossible
D.improper

单项选择题When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.

A.eddies under the bar
B.swift current under the bar causing loss of control
C.cross-currents pushing the tow away from the bar
D.cross-currents pushing the tow into the bar

单项选择题A towing vessel and her tow are severely restricted in their ability to change course. When making way，the towing vessel will show ONLY（）.

A.the masthead lights for a towing vessel
B.the lights for a vessel restricted in her ability to maneuver
C.sidelights，stern light，and towing light
D.All of the above

单项选择题A tow that is properly aligned to pass through a narrow opening between two bridge piers is （）.

A.on course
B.headed fair
C.holding on
D.in shape