单项选择题
An anchored vessel on pilotage duty must show which light(s) at night? （）
A.A sternlight only B.Anchor lights only C.A white light over a red light only D.A white light over a red light and anchor lights
单项选择题 ALL GEAR,SUCH AS PILOT LADDER,ACCOMMODATION LADDER,HOIST,ETC.,NECESSARY FOR A SAFE TRANSFER OF THE PILOT is known as （）.
