单项选择题
A.lower ballast tanks are filled with water B.sea anchor is deployed to windward C.fuel tanks are not less than half full D.passengers are strapped to their seats
Mean low water is the average height of（）.A.the surface...
单项选择题Mean low water is the average height of（）.
A.the surface of the sea B.high waters and low waters C.all low waters D.the lower of the two daily low tides
In the Sargasso Sea there are large quantities of seawe...
单项选择题In the Sargasso Sea there are large quantities of seaweed and no well defined currents. This area is located in the（）.
A.Central North Atlantic Ocean B.Caribbean Sea C.Western North Pacific Ocean D.area off the west coast of South America
In the Northern Hemisphere you are caught in the danger...
单项选择题In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. The best course of action is to bring the wind on the（）.
A.port quarter and make as much headway as possible B.starboard quarter and make as much headway as possible C.starboard bow and make as much headway as possible D.port bow and make as much headway as possible
