Broadly, ships flying flags of Party States, when on international voyages. Each chapter (I to XII) defines the ships to which that chapter applies. Application may depend on type of ship (e.g. chapter X - High Speed Craft), or date of build (e.g. chapter II-1 - Construction - subdivision and stability, machinery and electrical installations), area of operation (e.g. chapter V - Safety of navigation), tonnage (e.g. chapter IV - Radio communications) or cargoes (e.g. chapter VI - Carriage of cargoes and oil fuels). Each chapter may also exempt certain ships from the chapter's requirements.
Before arrival, either directly to the local authority or through an agent approved by the local authority, by radio, fax, email or other communications, so as to reach the local authority not more than twelve hours, and whenever practicable not less than four hours, before the expected arrival of the ship.
(1) Under Regulation 11: answer all questions as to health conditions on board put to him by a customs officer or authorised officer on arrival in port or if already in port; (2) under Regulation 13: report, before arrival, any infectious disease, etc. on board; and, (3) under Regulation 15: if there was anything to report under Reg. 13, complete a Maritime Declaration of Health.