A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the（）.

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• Which statement is TRUE concerning the ventilation of engine and fuel tank compartments on uninspected towing vessels using fuel with a flash point of 100°F?（）

  A . There shall be at least 3 ventilator ducts open to the atmosphere B . At least one exhaust duct shall extend from the open atmosphere to the lower portion of the bilge C . At least one intake duct shall extend from the open atmosphere to the lower portion of the bilge D . Only vessels using fuel with a flash point above 110°F need ventilate engine and fuel compartment

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• Your vessel is crossing a narrow channel.A vessel to port is within the channel and crossing your course.She is showing a black cylinder.What is your responsibility?（）

  A . hold your course and speed B . sound the danger signal C . begin an exchange of passing signals D . do not cross the channel if you might impede the other vessel

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• During the day，a vessel with a tow over 200 meters in length will show（）.

  A . a black ball B . a diamond shape C . two cones，apexes together D . one cone，apex upward

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• When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect（）.

  A . Both towheads will tend to drift apart，and the overtaking vessel will be slowed down B . Both towheads will tend to drift together，and the overtaking vessel will be slowed down C . Both towheads will tend to drift apart，and the overtaken vessel will be slowed down D . Both towheads will tend to drift together，and the overtaken vessel will be slowed dow

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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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• A head-on situation at night is one in which you see dead ahead a vessel showing（）.

  A . one sidelight B . one sidelight and a masthead light C . one sidelight and two masthead lights D . both sidelights of a vessel and her masthead light(s)

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• A vessel showing a yellow light over a white light at night is a vessel（）.

  A . engaged in piloting B . towing astern C . engaged in fishing D . in distre

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• 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（）.

  A . tow strain B . catenary length C . being in step D . Williamson's Tow

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• If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.

  A . change course B . slow down C . heave to D . adjust tow line length

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• A towing vessel’s capability is BEST measured by horsepower，bollard pull，maneuverability and（）.

  A . displacement B . stability C . towrope pull D . propeller desig

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• 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 light B . two masthead lights in a vertical line instead of either the forward or after masthead lights C . two towing lights in a vertical line at the stern D . a small white light aft of the funnel

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• A power-driven vessel，when towing astern，shall show（）.

  A . two towing lights in a vertical line B . a towing light in a vertical line above the sternlight C . two towing lights in addition to the sternlight D . a small white light in lieu of the sternlight

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• A towing vessel becomes tripped while towing on a hawser astern. What factor is MOST important when assessing the risk of capsizing? （）

  A . Length of the towline B . Height of the towline connection C . Longitudinal position of the towline connection D . Direction of opposing force

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• A vessel showing a rigid replica of the International Code flag “A” is engaged in（）.

  A . diving operations B . dredging C . fishing D . mineclearance operatio

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• If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.

  A . pushed ahead B . towed alongside C . towed astern D . Any 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 ahead B . a power-driven vessel，not towing C . a barge being pushed ahead D . either answer A or answer B

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• A vessel towing a barge astern would show，at the stern（）.

  A . only a stern light B . a towing light above the stern light C . two towing lights in a vertical line D . two white lights in a vertical line

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

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• A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.

  A . no fog signal B . one short blast C . one prolonged and three short blasts D . one prolonged，one short，and one prolonged blast

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• At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.

  A . in distress B . approaching a bend in the channel C . operating astern propulsion D . intending to overtake another vessel

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• If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.

  A . The towing line between the two vessels should be clear of the water B . The towing line should be taut at all times between the vessels C . There should be a catenary so the line dips into the water D . None of the above

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• Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.

  A . not exceed bare steerageway during the transit B . take a strain as soon as you can to control the tow C . come up to speed very slowly and maintain a safe speed D . come up to speed quickly，then cut back power considerably to ease the strai

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• A towing vessel is tripped when（）.

  A . it is overtaken by the tow B . it is pulled sideways by the tow C . the weight of the towing hawser causes loss of maneuverability D . the propeller is fouled by the towing hawser

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• If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights.These additional lights may be shown if the tow is ().

  A.pushed ahead B.towed alongside C.towed astern D.Any of the above

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