单项选择题 The officer in charge of the navigational watch shall not hand over the watch to the relieving officer if（）.

单项选择题 The Master to prosecute all voyages with the utmost（）and to render customary assistance with the Vessel’s Crew.

单项选择题 Shipping society approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew（）.