A.angle that the propeller makes with a free stream of water
B.angle that the propeller makes with the surface of the water
C.number of feet per revolution the propeller is designed to advance in still water without slip
D.positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without slip
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A.a margin of safety is provided should the line part
B.the towline will wear more evenly
C.there will be less stress on the towline
D.a slight increase in speed will be realized
A.advance
B.head reach
C.pitch
D.transfer
A.advance
B.head reach
C.pitch
D.transfer
A.arm
B.pitch
C.gage
D.rivet distance
A.one engine and a steering oar
B.both engines at the same speed
C.one engine at a time
D.one engine running at reduced speed and controlling the vessel with the other
最新試題
Which change in the condition of the seas could indicate the formation of a tropical storm or hurricane several hundred miles from your location? （）
The vertical movement of a vessel in the water is called（）.
When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）
One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.
Which statement concerning an automatic towing engine is FALSE? （）
What indicates that a tropical cyclone may be within 500 to 1，000 miles of your position?（）
Which statement is TRUE concerning a towing vessel which，due to the nature of her work，is unable to keep out of the way of another vessel?（）
The time required to incline from bow down to stern down and return to bow down again is called（）.
Which statement is TRUE concerning hawser towing? （）