单项选择题 In the case of a casualty involving a vessel，the Master，owner，agent or person in charge shall make the records required by regulation available upon request to（）.

单项选择题 In tanker trade，the signing by master the documents relating to the use of jetties and berths （）the shipowners thereby to pay for any damage caused to the jetties or berths by the vessel’s using them.

单项选择题 In no case shall ballast water be carried in cargo tanks，（）on those rare voyages when weather conditions are so severe that，in the opinion of the master，it is necessary to carry additional ballast water in cargo tanks for the safety of the ship.