While the Pilot is maneuvering the vessel to a dock，what is the PRIMARY responsibility of the watch officer?
A.Insure that helm and thruster orders given by the Pilot are correctly executed
B.Judge the appropriateness of the Pilot's orders and countermand them if necessary
C.Supervise the signaling and flag etiquette
D.Record the bells and their times in the bell book
正确答案是A