单项选择题
A look-out should report objects sighted using（）.
A.true bearings B.magnetic bearings C.gyro bearings D.relative bearings
单项选择题 A lookout can leave his station（）.
单项选择题 A look-out at the bow sights an object on your port side. How many bell strokes should he sound? （）
单项选择题 A helmsman receives the command Right 15 degrees rudder. The helmsman’s IMMEDIATE reply should be（）.
