单项选择题
A.Bow to the wind B.Beam to the wind C.Stern to the wind D.With the wind on the quarter
A.Three white lights in a vertical line are lit B.A red light starts to flash at about 60 times a minute C.A yellow light is illuminated on the bridge pier D.There is a range of green lights under the lift span
A.A fishing vessel with outlying gear B.A vessel proceeding under sail and machinery C.A vessel engaged in diving operations D.A vessel being towed