A.increase the towing hawser's catenary and provide more spring
B.reduce catenary，allow operation in shallower water，and to release one barge without breaking up the entire tow
C.enable one tug and its crew without any outside assistance to make up or break down the tow
D.provide rapid delivery of logs from the northwestern United States to Hawaiian sawmills
您可能感興趣的試卷
你可能感興趣的試題
A.only when the load is taken off the cable
B.only when there is a load on the cable
C.only when activated by the controls at the lowering station
D.at any time
A.Cirrus
B.Cumulus
C.Stratus
D.Nimbus
A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can
A.satellite communications
B.navigational information
C.weather information
D.position reporting service
A.At least two lifeboats
B.A radiotelephone
C.A radio direction finder
D.None of the above
最新試題
An example of a grade C product is（）.
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.
Aids to navigation marking the intracoastal waterway can be identified by（）.
An airplane should NOT send which signal in reply to a surface craft?（）
An advantage of the Christmas Tree towing method is to（）.
An engine compartment gasoline fire requires which type of extinguisher?（）
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
All OSV personnel should be familiar with survival craft（）.
In handling break bulk hazardous materials，it is forbidden to use（）.