A vessel is approaching from dead ahead． Both of her sidelights are visible and her range lights are in line. Which of the following could you do first?（）.

单项选择题A vessel has sustained damage in a collision with another vessel. It is necessary to have a Seaworthy Certificate before the vessel sails. Who will issue this certificate?（）

A.American Consul
B.Classification Society
C.Captain of the Port
D.Officer in Charge，Marine Inspection

单项选择题A vessel engaged in fishing underway sounds the same fog signal as a（）.

A.power-driven vessel stopped and making no way through the water
B.vessel being towed
C.vessel restricted in her ability to maneuver at anchor
D.sailing vessel at anchor

单项选择题A vessel constrained by her draught shall，when risk of collision with another vessel in a crossing or head-on situation exists，（）.

A.apply the relevant Steering and Sailing Rules as a power-driven vessel
B.apply the relevant Steering and Sailing Rules as a Sailing vessel
C.apply the relevant Steering and Sailing Rules as a vessel not under command
D.apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation

单项选择题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

单项选择题A stand-on vessel in a crossing situation is allowed to take action when（）.

A.on a collision course
B.the vessels will pass within one mile
C.it becomes apparent to her that the give-way vessel is not taking appropriate action
D.the relative speed of the vessels indicates collision in less than six minutes