单项选择题
All of the following records are usually maintained by the watch-standing officers aboard avessel EXCEPT the（）.
A.deck logbook B.official logbook C.compass record book D.chronometer error book
单项选择题 All entries in the Official Logbook must be signed by the Master and（）.
单项选择题 After your vessel has been involved in a casualty,you are required to make your logbooks,bell books,etc.,available to（）.
