单项选择题 You are in charge of a stand-on vessel in a crossing situation.The other vessel is 1.5 miles to port.You believe that risk of collision exists.You should（）.

单项选择题 Instructions for on-board maintenance of each life-saving appliance shall not include（）.

单项选择题 （）of the following items is not in the charge of Chief Officer in repairing operation.