reg 10 Fitness certificates: Code vessels and domestic passenger vessels
(1) If a person has been issued with a certificate of medical fitness which is specified by the Secretary of State in Merchant Shipping Notice 1839(M) as equivalent to a medical fitness certificate for work on a Code vessel or a domestic passenger vessel, then (unless that person is the master of a domestic passenger vessel) that certificate is for the purposes of regulations 6, 7, 12 and 13 equivalent to a medical fitness certificate, but only as respects that person's work on that type of vessel. (2) In paragraph (1)— “ Code vessel ” means a vessel which— operates under a Code of Practice, and does not go more than 60 miles from a harbour or shelter of any kind which affords entry (subject to prudence in the weather conditions prevailing) and protection from the force of weather, and “ domestic passenger vessel ” means a ship which is of Class VI or Class VI(A) as defined in the Merchant Shipping (Life Saving Appliances for Passenger Ships of Classes III to VI(A)) Regulations 1999 .