A jack-up drilling rig being towed must ______.A.turn off all lights that interfere with the navigation lightsB.turn on all available working lights on deckC.ring the bell rapidly for five seconds once a minuteD.display two black diamonds in a vertical line during the day
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
相关考题：
Navigation lights must be displayed in all weathers from sunset to sunrise. They also _____.A.must be displayed when day signals are being usedB.must be displayed when moored to a pierC.may be extingushed at night on open waters when no other vessels are in the areaD.may be displayed during daylight
A mobile offshore drilling unit must display obstruction lights when it is on the waters over the Outer Continental Shelf and is ______.A.under towB.fixed to the seabedC.underwayD.All of the above
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white?A.A vessel engaged in diving operationsB.A pilot vesselC.A vessel trawlingD.All of the above
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound ______.A.a 2-second blast every 20 secondsB.a 4-second blast every 20 secondsC.an 8-second blast every 30 secondsD.a 10-second blast every 30 seconds
A partly submerged vessel or object being towed，which is not readily noticeable，shall show ______.A.yellow lights at each endB.two red lights in a vertical lineC.a black ballD.a diamond shape
When cargo aboard a jack-up in transit becomes adrift，the tow vessel should be asked to ______.A.turn into the seasB.turn to be parallel to the seasC.reduce speedD.increase speed
When a marine surveyor is employed to assist in the move of a mobile offshore drilling unit，he ______.A.becomes responsible for the safe movement of the rigB.relieves the Offshore Installation Manager at the moment the rig is free from the bottomC.must be designated as the person in charge of the rigD.is a specialist who is hired to provide advice and guidance on aspects of the move
Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of restricted visibility?A.COLREGSB.MMS RulesC.SOLAS ConventionD.Coast Pilot
A vessel or object being towed astern shall display a(n) ______.A.forward masthead lightB.after masthead lightC.stern lightD.All of the above
单选题You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.AThe vessel must carry only the lights that comply with the rules; the others may be omittedBThe vessel's lights must comply as closely as possible，as determined by her governmentCThe vessel must be altered to permit full compliance with the rulesDAn all-round light should be substituted for the after masthead light and the stern light
单选题If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.Avessel not under commandBsailing vesselCvessel being towed (manned)Dvessel being towed (unmanned)
单选题Guide tolerances during elevation of the jack-up rig will（）.Areduce spud can bearing pressureBkeep the unit level and reduce overloadingCreduce stresses on the hullDminimize the potential for punch-through
单选题A single vessel being towed alongside shall exhibit（）.Aone all-round white lightBsidelights and a stern lightConly the outboard sidelight and a stern lightDa masthead light，sidelights，and a stern light
单选题A mobile offshore drilling unit must display obstruction lights when it is on the waters over the Outer Continental Shelf and is（）.Aunder towBfixed to the seabedCunderwayDAll of the above
单选题A single vessel being towed alongside shall exhibit（）.Aone all-round white lightBsidelights and a sternlightConly the outboard sidelight and a sternlightDa masthead light，sidelights，and a sternlight
单选题The suggested plan was to _____.Aturn off the lights in factories and schoolsBobserve a few minutes of total silenceCdim all electric lightsDshut off all electricity for a short time
单选题To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the（）.AAmerican Bureau of Shipping classification rulesBInternational Regulations for Preventing Collisions at SeaCSafety of Life at Sea ConventionDMinerals Management Service rules
单选题An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.Ayellow lights at each endBtwo red lights in a vertical lineCa black ballDa diamond shape
单选题A partly submerged vessel or object being towed，which is not readily noticeable，shall show （） .Ayellow lights at each endBtwo red lights in a vertical lineCa black ballDa diamond shape
单选题A jack-up drilling rig being towed must（）.Aturn off all lights that interfere with the navigation lightsBturn on all available working lights on deckCring the bell rapidly for five seconds once a minuteDdisplay two black diamonds in a vertical line during the day
单选题The International Regulations for Preventing Collisions at Sea contain the requirements for （）.Alights that must be displayed on anchor buoysBthe display of load line markingsCminimum horsepower for tugs involved in rig movesDlighting of mobile offshore drilling units being towed
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Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.Aonly when fully loadedBif one or more tanks are fullCwhen transferring cargoDonly when the barge is being towed
单选题Navigation lights must be displayed in all weathers from sunset to sunrise. They also（）.Amust be displayed when day signals are being usedBmust be displayed when moored to a pierCmay be extinguished at night on open waters when no other vessels are in the areaDmay be displayed during daylight
单选题Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of restricted visibility? （）ACOLREGSBMMS RulesCSOLAS ConventionDCoast Pilot
单选题A vessel，which is unable to maneuver due to some exceptional circumstance，shall exhibit （）.Aduring the day，three balls in a vertical lineBduring the day，three shapes，the highest and lowest being balls and the middle being a diamondCwhen making way at night，two all-round red lights，sidelights，and a sternlightDwhen making way at night，masthead lights，sidelights，and a sternlight