單項(xiàng)選擇題In twin-screw engine installations while going ahead,maneuvering qualities are most effective when the tops of the propeller blades both turn().

A.to starboard
B.outboard from the center
C.to port
D.inboard toward the center


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1.單項(xiàng)選擇題In towing,heaving lines are used for().

A.passing a tow bridle to the tug
B.passing a messenger line
C.heaving in the tow bridle
D.service lines with rocket line throwers

2.單項(xiàng)選擇題In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because().

A.shock loading on the tow line is reduce
B.towing speed is improved
C.the vessel is more visible from the tug
D.the catenary of the tow line is reduced

3.單項(xiàng)選擇題In order to back a right-handed,single-screw vessel in a straight line,you will probably need to use().

A.very little rudder
B.some left rudder
C.some right rudder
D.full left rudder

4.單項(xiàng)選擇題In order for a vessel to be engaged in fishing she must be().

A.underway
B.using gear which extends more than 50 meters outboard
C.using a seine of some type
D.using gear which restricts her maneuverability

5.單項(xiàng)選擇題In ballasting to survival draft,while in transit,due to extreme wind and wave loads,thrusters or propulsion,if available,should be used to().

A.reduce windward mooring tensions
B.maintain vessel heading
C.maximize accelerations
D.increase speed of advance

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If a towing vessel and her tow are severely restricted in their ability to change course,they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is().

題型:?jiǎn)雾?xiàng)選擇題

The catenary().

題型:?jiǎn)雾?xiàng)選擇題

One major advantage of the round turn maneuver in a man overboard situation is that it().

題型:?jiǎn)雾?xiàng)選擇題

The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? ()

題型:?jiǎn)雾?xiàng)選擇題

If a vessel under tow starts jumping on its tow line,the most appropriate action to alleviate the condition is to().

題型:?jiǎn)雾?xiàng)選擇題

A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind,the vessel will most likely back().

題型:?jiǎn)雾?xiàng)選擇題

Most of your vessel’s superstructure is forward. How will the vessel lie when drifting with no way on?().

題型:?jiǎn)雾?xiàng)選擇題

Once a towline is connected between the towing vessel and the disabled vessel,the towing vessel should().

題型:?jiǎn)雾?xiàng)選擇題

A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called().

題型:?jiǎn)雾?xiàng)選擇題

At night,a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two().

題型:?jiǎn)雾?xiàng)選擇題