Regulation 9 Duty of ISM company
An ISM company which owns or has assumed responsibility for the operation of a ship to which these Regulations apply must—
comply with each requirement of the ISM Code applicable to it; and
take all reasonable steps to ensure that the ship is operated in accordance with the safety management system on the basis of which one of the following documents has been issued—
in the case of a United Kingdom ship or a non-United Kingdom ship flying the flag of a Convention country, the Safety Management Certificate or Interim Safety Management Certificate; or
in the case of a non-United Kingdom ship flying the flag of a State which is not a Convention country, the document that demonstrates, to the satisfaction of the Secretary of State, an equivalent level of compliance with each requirement of the ISM Code applicable to that ship.