单项选择题

The ratio of the height of a vessel’s rudder to its width is referred to as the（）.

A.aspect ratio
B.constriction ratio
C.rudder ratio
D.steering ratio

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单项选择题

The projecting lugs of the rudderpost which furnish support to the rudder are called（）.

A.bases
B.gudgeons
C.pintles
D.rudder lugs

单项选择题

The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged（）.

A.on each watch，immediately before being relieved
B.before embarking on a voyage of more than 24 hours
C.daily，at 1200 local zone time
D.weekly，before 0000 Sunday

单项选择题

The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged（）.

A.when a new Master assumes command
B.daily，at 0800 local zone time
C.weekly，before 2400 Saturday
D.immediately after assuming the watch