Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another（）.

单项选择题Which vessel is NOT to be regarded as restricted in her ability to maneuver（）.

A.A vessel transferring provisions while underway
B.A pushing vessel and a vessel being pushed when connected in a composite unit
C.A vessel servicing a navigation mark
D.A vessel launching aircraft

单项选择题Which vessel is NOT classified as “restricted in her ability to maneuver” （）.

A.A vessel picking up a navigation mark
B.A vessel transferring cargo while underway
C.A vessel whose anchor is fouled
D.A vessel in a towing operation that restricts the ability of the vessel and her tow to change their course

单项选择题Which statement is TRUE，according to the Rules（）.

A.A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver
B.A vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft
C.A vessel constrained by her draft shall keep out of the way of a vessel engaged in fishing
D.A vessel engaged in fishing while underway shall，so far as possible，keep out of the way of a vessel restricted in her ability to maneuver

单项选择题Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel（）.

A.The power-driven vessel must keep out of the way of the sailing vessel
B.A special circumstance situation exists
C.The sailing vessel must keep out of the way of the power- driven vessel
D.The vessel which has the other vessel to the right must keep out of the way

单项选择题Which one of two crossing power-driven vessels has the right of way in a fog（）.

A.Both vessels
B.Neither vessel
C.The vessel on portside
D.The vessel on starboard side