单项选择题 Duties shall be so organized by the chief engineer officer that the first watch at the commencement of a voyage and the subsequent relieving watches are （） and otherwise fit for duty.

单项选择题 To ensure the safe operation of each ship and to provide a link between the Company and those on board, every Company, as appropriate, should designate a person or persons ashore having direct （） to the highest level of management.

单项选择题 he Port Authorities, in accordance with the IMO resolutions have been carrying out （） to enhance safety of ships.