更多"A partly submerged vessel or object"的相关试题:
[单项选择]A vessel or object being towed astern shall display a(n)（）.
A. forward masthead light
B. after masthead light
C. stern light
D. All of the above
[单项选择]An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.
A. yellow lights at each end
B. two red lights in a vertical line
C. a black ball
D. a diamond shape
[单项选择]A single vessel being towed alongside shall exhibit（）.
A. one all-round white light
B. sidelights and a sternlight
C. only the outboard sidelight and a sternlight
D. a masthead light，sidelights，and a sternlight
[单项选择]A vessel being towed will show（）.
A. a forward masthead light
B. sidelights and a sternlight
C. a towing light
D. All of the above
[单项选择]A vessel being towed astern，where the length of the tow exceeds 200 meters，will exhibit （）.
A. two balls in a vertical line
B. a diamond shape where it can best be seen
C. a ball on each end of the tow
D. no dayshape
[单项选择]A vessel being towed astern shall show at night（）.
A. the lights required for a power-driven vessel underway
B. only the required masthead lights
C. a sternlight only
D. sidelights and a sternlight
[单项选择]A jack-up drilling rig being towed must（）.
A. turn off all lights that interfere with the navigation lights
B. turn on all available working lights on deck
C. ring the bell rapidly for five seconds once a minute
D. display two black diamonds in a vertical line during the day
[单项选择]When a pushing vessel and a vessel being pushed are rigidly connected in a composite unit，they shall be regarded as（）.
A. a tugboat
B. a sailing vessel
C. a power-driven vessel
D. a vessel propelled by machinery and under sail
[单项选择]In restricted visibility a towed vessel must sound a fog signal when it is（）.
A. the last vessel in the tow
B. the last vessel in the tow and it is carrying a crew
C. manned，regardless of its position in the tow
D. None of the above are correct
[单项选择]When anchoring a vessel under normal conditions，which scope of chain is recommended? （）
A. Four times the depth of water
B. Two and one-half times the depth of water
C. Five to seven times the depth of water
D. Fifteen times the depth of water
[单项选择]A vessel being pushed ahead is required to carry which of the following lights?（）.
A. Sidelights and a stern light
B. Sidelights only
C. Sidelights and a small white light at each end
D. A small white light at each end
[单项选择]A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
A. displaying code letter Y (Yankee)
B. sounding five short blasts on his whistle
C. displaying code numeral 5
D. sounding one prolonged blast on his whistle
[单项选择]Back-up wires on a towed vessel provide（）.
A. a factor of safety
B. additional strength
C. a distribution of the towing load
D. All of the above
[单项选择]Vessel propellers are classified as being right hand or left handA right hand propeller turns clockwise when viewed from（）.
A. the bow
B. the stem
C. the port side
D. the starboard side
[单项选择]After being launched from a vessel, totally enclosed survival craft which have been afloat over a long period require（）.
A. frequent opening of hatches to permit entry of fresh air
B. regular checks of bilge levels
C. use of ear plugs to dampen engine noise
D. frequent flushing of the water spray system with fresh water
[单项选择]After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
A. frequent opening of hatches to permit entry of fresh air
B. regular checks of bilge levels
C. use of ear plugs to dampen engine noise
D. frequent flushing of the water spray system with fresh water
