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单选题
A power driven vessel when towing and the length of the tow exceeds 200 meters shall exhibit during daylight hours where they can best be seen which of the following shapes? （）
A
a diamond shape
B
two cones，apexes together
C
a black ball
D
one cone，apex upward
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A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately
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A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit ______.A.the masthead lights for a towing vesselB.the lights for a vessel restricted in its ability to maneuverC.sidelights，stern light and towing lightD.All of the above
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A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of ______．A.A vessel towing by pushing aheadB.A power-driven vessel，not towingC.A barge being pushed aheadD.Either answer A or answer B
考题
单选题A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of（）.A
a vessel towing by pushing aheadB
a power-driven vessel，not towingC
a barge being pushed aheadD
either answer A or answer B
考题
单选题A vessel constrained by her draught shall，when risk of collision with another vessel in a crossing or head-on situation exists，（）.A
apply the relevant Steering and Sailing Rules as a power-driven vesselB
apply the relevant Steering and Sailing Rules as a Sailing vesselC
apply the relevant Steering and Sailing Rules as a vessel not under commandD
apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
考题
单选题A vessel is（）when she is not at anchor，made fast to the shore，or aground.A
underwayB
making wayC
dead in the waterD
a power driven vessel
考题
单选题A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）A
When the towing vessel enters the fogB
When the drilling rig enters the fogC
When the towing vessel can no longer be seen from the rigD
Immediately
考题
单选题Vessel constrained by her draught is（）.A
a non-power driven vesselB
a sailing vesselC
a power driven vesselD
a power driven vessel or a non-power driven vessel
考题
单选题You see a vessel carrying a black diamond which indicates a（）.A
vessel towing asternB
barge pushed aheadC
vessel towing astern only when the length of her tow exceeds 200 metersD
this signal does not exist in international waters
考题
单选题A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.A
the masthead lights for a towing vesselB
the lights for a vessel restricted in its ability to maneuverC
sidelights，stern light and towing lightD
All of the above
考题
单选题In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.A
insure that the hawser leads directly aft as it passes over the stern of the towing vesselB
increase the stability of the towing vessel by raising the hawser off the deckC
reduce chafing of the towing hawserD
prevent fouling of the hawser on deck gear located on the stern of the towing vessel
考题
单选题The catenary（）.A
acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the towB
gives an approximation of the amount of strain on the towing hawserC
is the dip in the towing hawser between the tug and the towD
All of the above
考题
单选题A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.A
three masthead lights in a vertical line instead of either the forward or after masthead lightB
two masthead lights in a vertical line instead of either the forward or after masthead lightsC
two towing lights in a vertical line at the sternD
a small white light aft of the funnel
考题
单选题A power-driven vessel pushing aheador towing alongside displays navigation lights and（）.A
two all-round red lights in a vertical lineB
two yellow towing lights in a vertical lineC
two white masthead lights in a vertical lineD
two lights on the stern，one yellow and one white
考题
单选题When a pushing vessel and a vessel（）ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel.A
is pushedB
being pushedC
was pushedD
be pushed
考题
单选题The Vessel Bridge-to-Bridge Radiotelephone Act applies to（）.A
every towing vessel of 16 feet or over in length while navigatingB
every vessel of 50 GT and upward，carrying one or more persons for hireC
all aircraft operating on the waterD
every power-driven vessel of 20 meters and upward while navigating
考题
单选题Which statement is TRUE concerning hawser towing? （）A
The catenary in a hawser should be sufficient so that the hawser just touches the bottomB
The hawser is of sufficient length for towing when taut between tug and towC
Increasing speed usually increases the catenary in the hawserD
Shortening the tow hawser generally decreases the maneuverability of the tug
考题
单选题A vessel towing where the tow prevents her from changing course shall carry（）.A
only the lights for a vessel towingB
only the lights for a vessel restricted in her ability to maneuverC
the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuverD
the lights for a towing vessel and the lights for a vessel not under command
考题
单选题Which will NOT reduce yawing of a tow?（）A
Increasing the length of the towing hawserB
Trimming the tow by the bowC
Trimming the tow by the sternD
Drogues put over the stern
考题
单选题A single towing light will be carried above a vessel’s sternlight（）.A
only if she is towing asternB
only if the tow exceeds 200 metersC
at any time when towingD
if the towing vessel is part of a composite unit
考题
单选题A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.A
the masthead lights for a towing vesselB
the lights for a vessel restricted in its ability to maneuverC
sidelights，sternlight and towing lightD
All of the above
考题
单选题A 20-meter power-driven vessel pushing ahead or towing alongside will display（）.A
a single white light forwardB
two masthead lights in a vertical lineC
two towing lights in a vertical lineD
two all-round red lights where they can best be seen
考题
单选题A power-driven vessel，when towing astern，shall show（）.A
two towing lights in a vertical lineB
a towing light in a vertical line above the sternlightC
two towing lights in addition to the sternlightD
a small white light in lieu of the sternlight
考题
单选题A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.A
trim the tow by the bowB
trim the tow by the sternC
list the tow to windwardD
adjust the length of the towing bridle
考题
单选题A towing vessel and her tow are severely restricted in their ability to change course. When making way，the towing vessel will show ONLY（）.A
the masthead lights for a towing vesselB
the lights for a vessel restricted in her ability to maneuverC
sidelights，stern light，and towing lightD
All of the above
考题
单选题When towing in an open seaway，it is important to use a towing line（）.A
made only of wire rope，due to possible weather conditionsB
that will have the tow on a crest while your vessel is in a troughC
that will have the tow on a crest while your vessel is on a crestD
with little dip to gain maximum control of the tow
考题
单选题Which vessel，when anchored at night，is NOT required to show anchor lights?（）.A
A power-driven vesselB
A vessel engaged on pilotage dutyC
A vessel dredgingD
A vessel restricted in her ability to maneuver
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