(1) A recognized duly qualified medical practitioner may suspend or cancel a medical fitness certificate under subregulation (2) if he or she has reasonable grounds for believing that —
(a) there has been a significant change in the medical fitness of a seafarer during the period of validity of his or her medical fitness certificate; or
(b) when the medical fitness certificate was issued the recognized duly qualified medical practitioner, had he or she been in possession of full details of the seafarer's condition, could not reasonably have considered that the seafarer was fit, having regard to the medical standards referred to in regulation 7; or
(c) the medical fitness certificate was issued otherwise than in accordance with these Regulations.
(2) Where a ground under subregulation (1) exists, the recognized duly qualified medical practitioner may —
(a) suspend the validity of the certificate until the seafarer has undergone a further medical examination;
(b) suspend the certificate for such period as he or she considers the seafarer will remain unfit to go to sea; or
(c) cancel the certificate where he or she considers that the seafarer is likely to remain permanently unfit to go to sea.
(3) A recognized duly qualified medical practitioner shall notify the seafarer in writing of the suspension or cancellation of a medical fitness certificate.