單項選擇題

The term power-driven vessel means（）in these Rules.

A.any sailing vessel with propelling machinery
B.any vessel propelled by machinery
C.any sailing vessel with or without machinery for propelling
D.any sailing vessel with propelling machinery not in use

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單項選擇題

The steering and sailing rules for vessels in restricted visibility apply to vessels（）.

A.in sight of one another in fog
B.navigating in or near an area of restricted visibility
C.only if they are showing special purpose lights
D.only if they have operational radar

單項選擇題

The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include（）.

A.state of wind，sea，and current，and the proximity of navigational hazards
B.maximum attainable speed of your vessel
C.temperature
D.aids to navigation that are available