An ocean towing bridle should（）.

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• If the towing bridle legs are not of equal length（）.

  A . excessive strain is placed on the shorter leg B . the shorter leg may fail C . the longer leg is slack D . All of the above

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• What is used to prevent twisting of a towing bridle?（）

  A . A bitt B . A bulkhead C . A V-spring D . A fishplate

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• A bridle for an ocean tow consists of（）.

  A . two chains of equal length B . a single nylon pendant rove through a heavy ring free to move on the pendant C . two long legs of wire rope shackled to a fishplate D . a single length of heavy chain with both ends secured on deck to welded pad eye

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• A tow bridle is attached to the main tow hawser at the（）.

  A . bight ring B . tow hook C . fishplate D . swivel

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• 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

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• In securing deck loads for an ocean tow，drill pipe should be（）.

  A . galvanized to protect against corrosion B . held in place with heavy materials such as spare pendant wire C . limited to no more than five courses high D . provided with bulwarks at both ends of their bay

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• On a long ocean tow，the bridle should be made up of two equal lengths of（）.

  A . chain B . wire C . nylon D . manila

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• The choice of length of tow bridle legs is governed by the（）.

  A . expected towing forces B . capability of retrieving gear C . freeboard of the unit being towed D . need to reduce yaw

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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 vessel B . the lights for a vessel restricted in its ability to maneuver C . sidelights，stern light and towing light D . All of the above

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• What is NOT required on an uninspected towing vessel? （）

  A . Certificate of Documentation B . Certificate of Inspection C . Operators Merchant Marine license D . FCC Station License

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• To clean a dirty fiber towing hawser used in ocean towing，you should（）.

  A . use lye or other mild detergent B . wash it with fresh water，dry and store it C . wash it with salt water D . use cleaning fluid on nylon，dacron and other synthetic line

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• What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）

  A . Chain B . Ring C . Solid thimble D . A fishplate

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• It is good practice to use long towlines for ocean tows because the（）.

  A . wear on the towline is equalized B . weight of the towline increases the towing force C . dip in the towline absorbs shock loads D . danger of overriding is reduced

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• A chain bridle is used when towing astern because it（）.

  A . is easy to connect B . provides an effective catenary and absorbs shock due to its weight C . makes rigging a swivel unnecessary D . prevents the tow from yawing by the drag of the chains in a seaway

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• An ocean towing bridle whose legs are of equal length，but too short，may（）.

  A . fail to provide spring in the hawser B . cause unequal distribution of the load to one leg C . cause the bridle legs to jump clear of the chocks or fairleads D . None of the above

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• When towing in an open seaway，it is important to use a towing line（）.

  A . made only of wire rope，due to possible weather conditions B . that will have the tow on a crest while your vessel is in a trough C . that will have the tow on a crest while your vessel is on a crest D . with little dip to gain maximum control of the tow

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• 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

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• As seen from the tow，what should connect the leading ends of both towing bridle legs to the main towing hawser?（）

  A . A cable clamp B . A fishplate，flounder，or towing plate C . A pad eye D . The towing bitt

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• By regulation，life preservers aboard an uninspected towing vessel must be（）.

  A . readily accessible B . securely stowed C . stored in sealed containers D . stowed with the emergency provisio

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• The speed of an ocean current is dependent on（）.

  A . the density of the water B . the air temperature C . the presence of a high pressure area near it D . underwater soil conditio

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• The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to（）.

  A . one-half the SWL of the main towing hawser B . three-fourths the SWL of the main towing hawser C . that of the main towing hawser D . twice that of the main towing hawser

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• When towing，what is the main reason for using a chain bridle on a wire hawser（）.

  A . It makes for an easy connection B . It gives a spring effect to cushion the shock C . It eliminates the necessity of a swivel D . It does not chafe

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• The biggest problem encountered when towing bridle legs are too short is（）.

  A . retrieval B . adjusting tension C . excessive strain D . hookup to main towline

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