单选题A vessel towing where the tow prevents her from changing course shall carry().Aonly the lights for a vessel towingBonly the lights for a vessel restricted in her ability to maneuverCthe lights for a towing vessel and the lights for a vessel restricted in her ability to maneuverDthe lights for a towing vessel and the lights for a vessel not under command

单选题
A vessel towing where the tow prevents her from changing course shall carry().
A

only the lights for a vessel towing

B

only the lights for a vessel restricted in her ability to maneuver

C

the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver

D

the lights for a towing vessel and the lights for a vessel not under command


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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

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

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

A chain bridle is used when towing astern because it ______.A.is easy to connectB.provides an effective catenary and absorbs shock due to its weightC.makes rigging a swivel unnecessaryD.prevents the tow from yawing by the drag of the chains in a seaway

An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful Which action should now be taken?______.A.Abandon the towing vessel.B.Radio for emergency assistance.C.Slip the towline and allow it to run off the drum.D.Secure all watertight openings on the towing vessel.

If practical, when shall a manned vessel being towed sound her fog signal?______.A.Immediately before the towing vessel sounds hersB.Immediately after the towing vessel sounds hers.C.As close to the mid-cycle of the towing vessel’s signals as possibleD.At any time as long as the interval is correct

单选题When towing astern,increased catenary will().Aincrease control of the towBprevent the towing vessel from going in ironsCmake the towing vessel less maneuverableDreduce shock stress on the towing hawser

单选题A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? ()AWhen the towing vessel enters the fogBWhen the drilling rig enters the fogCWhen the towing vessel can no longer be seen from the rigDImmediately

单选题An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? ()AAbandon the towing vesselBRadio for emergency assistanceCSlip the towline and allow it to run off the drumDSecure all watertight openings on the towing vessel

单选题You see a vessel carrying a black diamond which indicates a().Avessel towing asternBbarge pushed aheadCvessel towing astern only when the length of her tow exceeds 200 metersDthis signal does not exist in international waters

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().Athe masthead lights for a towing vesselBthe lights for a vessel restricted in its ability to maneuverCsidelights,stern light and towing lightDAll of the above

单选题Which vessel is NOT classified as “restricted in her ability to maneuver” ().AA vessel picking up a navigation markBA vessel transferring cargo while underwayCA vessel whose anchor is fouledDA vessel in a towing operation that restricts the ability of the vessel and her tow to change their course

单选题In astern towing,a tow span,also called the tow bar or towing arch,is used to().Ainsure that the hawser leads directly aft as it passes over the stern of the towing vesselBincrease the stability of the towing vessel by raising the hawser off the deckCreduce chafing of the towing hawserDprevent fouling of the hawser on deck gear located on the stern of the towing vessel

单选题You have a large,broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however,unless there are special circumstances().Athe towing vessel should slip firstBthe vessel towed should slip firstCthey should slip simultaneouslyDeither vessel may slip first

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? ()Aa diamond shapeBtwo cones,apexes togetherCa black ballDone cone,apex upward

单选题If the situation arose where it became necessary to tow a disabled vessel,which statement is TRUE concerning the towing line?().AThe towing line between the two vessels should be clear of the waterBThe towing line should be taut at all times between the vesselsCThere should be a catenary so the line dips into the waterDNone of the above

单选题A “loose” tow may cause all of the following EXCEPT().Aloss of maneuverabilityBlines to partCdamage to the towing vessel and towDa saving in the transit time

单选题A single towing light will be carried above a vessel’s sternlight().Aonly if she is towing asternBonly if the tow exceeds 200 metersCat any time when towingDif the towing vessel is part of a composite unit

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().Athe masthead lights for a towing vesselBthe lights for a vessel restricted in its ability to maneuverCsidelights,sternlight and towing lightDAll of the above

单选题In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because().Ashock loading on the tow line is reduceBtowing speed is improvedCthe vessel is more visible from the tugDthe catenary of the tow line is reduced

单选题A tow astern is veering from side to side on its towline. The best way of controlling the action is to().Atrim the tow by the bowBtrim the tow by the sternClist the tow to windwardDadjust the length of the towing bridle

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().Athe masthead lights for a towing vesselBthe lights for a vessel restricted in her ability to maneuverCsidelights,stern light,and towing lightDAll of the above

单选题Vessel towing with the current shall()tow more than two boats and they must be towed alongside.Aat timesBat any timeCat no timeDat moment

单选题A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is().Atow strainBcatenary lengthCbeing in stepDWilliamson's Tow

单选题When towing in an open seaway,it is important to use a towing line().Amade only of wire rope,due to possible weather conditionsBthat will have the tow on a crest while your vessel is in a troughCthat will have the tow on a crest while your vessel is on a crestDwith little dip to gain maximum control of the tow

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单选题As seen from the tow,what should connect the leading ends of both towing bridle legs to the main towing hawser?()AA cable clampBA fishplate,flounder,or towing plateCA pad eyeDThe towing bitts