A.yawing
B.moving
C.turning
D.pitching
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A.ballasting
B.deballasting
C.disconnecting
D.hanging off
A.broaching
B.pitchpoling
C.rolling
D.yawing
A.installing rat guards on the mooring lines when in port
B.keeping foods protected and avoiding the accumulation of garbage
C.eliminating possible living spaces for rats when the ship is constructed
D.trapping and/or poisoning the rats
A.low and bare，but the land back of it is high and wooded
B.composed of low to medium rolling hills
C.well defined with rocky outcroppings
D.marked by high，barren hills
A.windward side
B.leeward side
C.safe semicircle
D.dangerous semicircle
A.A lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from astern
B.A vessel is dead in the water when the back wash from astern operation reaches the bow
C.A tunnel bow thruster can be used in an emergency to reduce the stopping distance
D.When a vessel is dead in the water any speed displayed by doppler log reflects the current
A.reducing rolling
B.increasing rolling
C.reducing yawing
D.increasing yawing
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
A.Slightly higher fuel consumption
B.Lack of directional control when backing
C.Inefficient at high shaft RPM
D.Some unusual handling characteristics
A.The catenary in a hawser should be sufficient so that the hawser just touches the bottom
B.The hawser is of sufficient length for towing when taut between tug and tow
C.Increasing speed usually increases the catenary in the hawser
D.Shortening the tow hawser generally decreases the maneuverability of the tug
最新試題
The forward movement of a ship in one revolution of its propeller is measured by（）.
The angular movement of a vessel about a horizontal line drawn from its bow to its stern is （）.
When the period of beam seas equals the natural rolling period of a vessel，what will most likely occur?（）
In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.
What indicates that a tropical cyclone may be within 500 to 1，000 miles of your position?（）
When preparing a ship for heavy weather，fuel oil day tanks should be（）.
The pitch of a propeller is a measure of the（）.
When a vessel is swinging from side to side off course due to quartering seas，the vessel is （）.
The area around Cape Charles is（）.
The distance between rivets in a row is known as the（）.