Maintenance of charts and nautical publications up to date is a statutory requirement under the（）Convention.

A.take avoiding action immediately upon determining that risk of collision exists
B.immediately sound the danger signal
C.take avoiding action only after providing the give-way vessel time to take action ,and determining that her action is not appropriate
D.hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision

A.a checklist for use when carrying out the inspections
B.list of crew members
C.maintenance and repair instructions
D.schedule of periodic maintenance

A.Hull cleaning
B.Derusting and painting
C.The maintenance of boiler
D.Docking and undocking