单项选择题
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
A.from the ship's propeller when making up aft B.from being overrun if making up forward C.hull damage while alongside passing a hawser D.getting in a tripping position
单项选择题 A pilot vessel on pilotage duty shall show identity lights （）.
单项选择题 A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
单项选择题 A pilot vessel may continue to sound an identity signal if she is （）.
