A.shown at the bow
B.white in color
C.shown in addition to the stern light
D.an all-round light
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A.tug's engineroom or the bow
B.pilot house or aft steering station
C.forecastle
D.towing bitts by reaching over and releasing a lever
A.on course
B.headed fair
C.holding on
D.in shape
A.port and starboard strings
B.outer strings
C.drag strings
D.side strings
A.a mechanical breakdown on the tug
B.adverse tidal current conditions
C.the tug reducing its speed
D.All of the above
A.celestial meridian
B.celestial equator
C.celestial horizon
D.principal vertical circle
最新試題
A vertex of the navigational triangle is NOT located at the（）.
A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.
A stretch where the channel changes from one side of the river to the other is called a （）.
A tow of 9 barges is made up three abreast by three long. The towboat is faced up to the last barge of the center string. The outer two strings of barges are the（）.
A tug may be in danger of tripping when（）.
A tsunami is caused by a(n)（）.
A stand-on vessel is（）.
A slow，gradual fall of the barometer indicates approaching（）.
A spanner is a （）.
A thrust block is designed to（）.