单项选择题
A.these taken into calculation B.those taking into account C.that taken into account D.those taken into account
In a crossing situation on open waters，a sailing vessel...
单项选择题In a crossing situation on open waters，a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel（）.
A.not under command B.restricted in her ability to maneuver C.engaged in towing D.fishing
If your vessel is underway in fog and you hear one prol...
单项选择题If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.
A.vessel not under command B.sailing vessel C.vessel being towed (manned) D.vessel being towed (unmanned)
If there is sufficient sea room，alteration of（）may be t...
单项选择题If there is sufficient sea room，alteration of（）may be the most effective action to avoid close-quarters situation.
A.speed and course B.speed alone C.course alone D.speed or course
