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

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

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

A . propulsion horsepower available B . pulling ability at cruise power C . towing winch capability D . pulling ability under static conditio

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

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

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

A . two balls in a vertical line B . a diamond shape where it can best be seen C . a ball on each end of the tow D . no dayshape

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

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

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

A . the towing vessel should slip first B . the vessel towed should slip first C . they should slip simultaneously D . either vessel may slip first

A . a Coast Guard inspector B . a registered professional engineer C . the owner or Master of the vessel D . a licensed electricia

A . a single white light forward B . two masthead lights in a vertical line C . two towing lights in a vertical line D . two all-round red lights where they can best be see

A . crew members using their arms B . crew members using the strong muscles of their legs C . fenders D . No fending is necessary due to the rugged construction of most towing vessel

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

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

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

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

A . forward masthead light B . after masthead light C . stern light D . All of the above

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

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

A . a test from the alternative power supply，if installed B . timing the movement of the rudder from hard over to hard over C . verification that the rudder angle indicator shows the actual position of the rudder(s) D . visual inspection of the steering linkage

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