单项选择题
In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.
A.around the rudder and screws B.completely around the vessel C.to leeward of the vessel D.to windward of the vessel
单项选择题 If your vessel has a GM of one foot and a breadth of 50 feet，what will be your full rolling period? （）
单项选择题 If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
单项选择题 How are riveted lap joints made watertight?（）
