5.—(1) Subject to provisions of the relevant paragraphs of the Code of Practice, the statutory instruments listed in the Schedule to these Regulations shall not apply to any workboat to which this regulation applies which has been examined, and in respect of which a certificate has been issued, in accordance with the Code of Practice.
(2) Where a vessel has been so examined and a certificate issued, the vessel shall not proceed or attempt to proceed to sea unless—
(a)the certificate is currently in force;
(b)the vessel complies with the requirements of the Code of Practice (including any requirements as to operation, manning and maintenance) and is operated in accordance with any conditions as specified in the certificate; and for this purpose any provision of the Code of Practice expressed in the conditional (i.e. “should”) shall be a requirement; and
(c)the certificate is displayed in some conspicuous place on board.
(3) Following the completion of any survey of a vessel required by the Code of Practice, no material change shall be made to the vessel, its machinery or equipment without the prior approval of the Certifying Authority.