单选题During the voyage, the derrick should be stowed （）.A foreB aftC fore and aftD lowered

Before adjusting the derrick, what work should be done?

Uncleared crew curios remaining on board during a domestic coastwise voyage after returning from foreign should be ______.

A.listed in the Official Logbook

B.cleared prior to the next foreign voyage

C.noted in the Traveling Curio Manifest

D.retained under locked security by the owner

We always have a lot of things ________during the voyage.

A.do

B.doing

C.to do

D.does

Coast Guard approved buoyant work vests ______．

A.may be substituted for 10 percent of the required life preservers

B.should be stowed adjacent to lifeboats and emergency stations

C.may be used by boat crews and line handlers during lifeboat drills

D.should be used when carrying out duties near a weather deck's edge

During the voyage he encountered boisterous winds and heavy weather during which time the vessel________ heavily and to such an extent that at times it was necessary to change course．

A.moved

B.labored

C.drived

D.went

A seaman lost his continuous discharge book during the voyage. Upon discharge from Articles，he should be issued a ______.

A.letter of service on company letterhead signed and sealed by the master

B.Record of Entry in a Continuous Discharge Book for use in applying for a duplicate book

C.Certificate of Discharge with the white copy forwarded to the Commandant

D.Mutual Release (CG-2119)，and the articles should be annotated as to the loss

Never______stowed like this．

A.optional cargo should be

B.should optional cargo be

C.should be optional cargo

D.optional cargo must be