【单选题】[5-46]Avessel engaged in ___ shall not impede the passage of any other vessel navigating within a narrow channel or fairway.从事于捕鱼的船舶不应妨碍在狭水道或航道内航行的任何其他船舶的通行。
A.
mine clearance operation清除水雷作业
B.
towing operation拖带作业
C.
dredging or surveying or underwater operation疏浚、测量或水下作业