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
Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）
When running before a heavy sea，moving weights aft will affect the handling of a vessel by （）.
Which statement is TRUE of a stiff vessel? （）
Which will NOT reduce yawing of a tow?（）
To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.
The area around Cape Charles is（）.
The forward movement of a ship in one revolution of its propeller is measured by（）.
The distance between rivets in a row is known as the（）.
The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.
Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? （）