(1) Where the Chief Inspector decides that an investigation must be carried out, an inspection must be undertaken by one or more inspectors at a time and place and in a manner that appears to be most conducive to improving maritime safety and the prevention of pollution by ships, and to reduce the risk of a future marine casualty, marine incident or marine accident by —
(a) facilitating an expeditious safety investigation and proper analysis of a marine casualty and marine incident in order to determine the cause of a marine casualty and marine incident; and
(b) ensuring the timely and accurate reporting of a safety investigation and proposal for remedial action.
(2) An inspection may extend to cover events and circumstances preceding the accident together with subsequent events and circumstances which in the opinion of an inspector may be relevant to the cause or outcome of an accident.
(3) A document, record or information under regulation 10, that is properly required by an inspector to be produced for the purposes of an inspection, whether on board the ship involved or otherwise, may be retained by him or her until the investigation is completed.