As a ship moves through the water，it causes a wake，which is also moving forward relative to the sea. In addition to a fore and aft motion，this wake also has a(n)（）.

单项选择题Angular motion about the vertical axis of a vessel is called（）.

A.yaw
B.surge
C.sway
D.roll

单项选择题Angular motion about the longitudinal axis of a vessel is known as（）.

A.pitch
B.surge
C.sway
D.roll

单项选择题All of the following can be determined by use of a stabilogauge EXCEPT（）.

A.metacentric height
B.mean draft
C.moment to trim one inch
D.deadweight

单项选择题A vessel with a small GM will（）.

A.have a large amplitude of roll
B.provide a comfortable ride for the crew and passengers
C.have drier decks in heavy weather
D.be likely to have cargo shift in heavy weather

单项选择题A vessel loads edible oil in a deep tank through a manhole at the midlength of the tank. In order to fill the tank to maximum capacity，what trim should the vessel have?（）

A.Down by the bow
B.Down by the stern
C.Down by either the bow or stern
D.In level trim