All events relating to the voyage，such as ship’s position，speed and details of the weather，are recorded in（）.

单项选择题If a spill occurs，where would you log it（）.

A.Oil Record Book
B.Bell book
C.Smooth logbook
D.Official Logbook

单项选择题The entries in the Official Logbook must be signed by the Master and（）.

A.the Chief Engineer
B.the person about whom the entry concerns
C.one other crew member
D.No other signature is required