A head on situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and ______.A.one sidelight and the masthead light are visibleB.the vessels will pass closer than half a mileC.both vessels sound one prolonged blastD.both sidelights and masthead light(s) are visible
A head on situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and ______.
A.one sidelight and the masthead light are visible
B.the vessels will pass closer than half a mile
C.both vessels sound one prolonged blast
D.both sidelights and masthead light(s) are visible
相关考题：
The risk of collision shall be deemed to exist if the compass bearing of an approaching vessel ().A.did not appreciably changeB.does not appreciably changeC.do not appreciably changeD.not appreciably change
An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead ?______.A.Masthead lights and sidelightsB.One sidelight, the masthead lights and stern-lightC.Both sidelightsD.Stern-light
In which situation do the Rules require both vessels to change course ?______.A.Two power-driven vessels meeting head-onB.Two power-driven vessels crossing when it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate actionC.Two sailing vessels crossing with the wind on the same sideD.All of the above
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，（）.Aapply the relevant Steering and Sailing Rules as a power-driven vesselBapply the relevant Steering and Sailing Rules as a Sailing vesselCapply the relevant Steering and Sailing Rules as a vessel not under commandDapply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
单选题When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line or both side lights，（）shall be deemed to exist.Ahead-on situationBend-situationCcrossing situationDclose-quaters situation
单选题Risk of collision may be deemed to exist（）.Aif the compass bearing of an approaching vessel does not appreciably changeBeven when an appreciable bearing change is evident, particularly when approaching a vessel at close rangeCif you observe both sidelights of a vessel ahead for an extended period of timeDAll of the above
单选题The risk of collision shall be deemed to exist if the compass bearing of an approaching vessel （）.Adid not appreciably changeBdoes not appreciably changeCdo not appreciably changeDnot appreciably change
单选题When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.Astop her enginesBalter course to starboardCsound the danger signalDback down
单选题A power-driven vessel not under command at night must show her sidelights when（）.Amaking headwayBmaking no headwayCmoored to a buoyDat anchor
单选题When ship at anchor she shall be deemed to be（）.ANot under-wayBNot under commandCRestricted in her ability to maneuverDA non-displacement ship
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.Ais pushedBbeing pushedCwas pushedDbe pushed
单选题When you doubt the existence of risk of collision,（）.Asuch risk shall be deemed to existBSuch risk shall not be deemed to existCYou should keep your course and speedDYou needn‟t take any action to avoid collision with any vessel
单选题A head-on situation at night is one in which you see dead ahead a vessel showing（）.Aone sidelightBone sidelight and a masthead lightCone sidelight and two masthead lightsDboth sidelights of a vessel and her masthead light(s)
单选题When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.Ahead-on situationBcrossing situationCovertaking situationDclose-quarters situation
单选题When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.Acrossing situationBhead-on situationCrestricted visibilityDovertaking situation
单选题A power-driven vessel shall have her engine ready for（）when the visibility is restricted.Aimmediate stoppingBimmediate maneuveringCimmediate anchoringDimmediate going astern
单选题In a crossing situation on open waters，a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel（）.Anot under commandBrestricted in her ability to maneuverCengaged in towingDfishing
单选题An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?（）AMasthead lights and sidelightsBOne sidelight，the masthead lights and stern lightCBoth sidelightsDStern light
单选题A vessel shall be deemed to be overtaking when she can see at night（）.Aonly the sternlight of the vesselBa sidelight and one masthead light of the vesselConly a sidelight of the vesselDany lights except the masthead lights of the vessel
单选题The Rules state that risk of collision shall be deemed to exist（）．AWhenever two vessels approach from opposite directionsBIf the bearing of an approaching vessel does not appreciably changeCWhenever a vessel crosses ahead of the intended track of another vesselDIf one vessel approaches another so as to be overtaking
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单选题A head-on situation at night is one in which you see（）.Aone sidelight of a vessel ahead of youBone sidelight and a masthead light of a vessel ahead of youCone sidelight，a masthead light，and a range light of a vessel ahead of youDboth sidelights of a vessel dead ahead of you
单选题When a pushing vessel and a vessel being pushed are rigidly connected in a composite unit，they shall be regarded as（）.Aa tugboatBa sailing vesselCa power-driven vesselDa vessel propelled by machinery and under sail
单选题A vessel being towed astern shall show at night（）.Athe lights required for a power-driven vessel underwayBonly the required masthead lightsCa sternlight onlyDsidelights and a sternlight
单选题Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel（）.AThe power-driven vessel must keep out of the way of the sailing vesselBA special circumstance situation existsCThe sailing vessel must keep out of the way of the power- driven vesselDThe vessel which has the other vessel to the right must keep out of the way
单选题Which vessel，when anchored at night，is NOT required to show anchor lights?（）.AA power-driven vesselBA vessel engaged on pilotage dutyCA vessel dredgingDA vessel restricted in her ability to maneuver
单选题A head on situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and （）.Aone sidelight and the masthead light are visibleBthe vessels will pass closer than half a mileCboth vessels sound one prolonged blastDboth sidelights and masthead light(s) are visible