A.should not be carried out during the watches B.can only be carried out in port C.is a kind of maintenances carried out prior to the occurrence D.is a kind of maintenances carried out after the occurrence
A.to provide for safe practices in ship operation and a safe working environment B.to establish safeguards against all identified risks C.to continuously improve safety management skills of personnel, including preparing for emergencies D.all the above
A.the ship owner B.any person who has assumed responsibility for operating the ship C.either A or B D.neither A nor B