http://www.legislation.gov.uk/uksi/1981/1065/madeThe Merchant Shipping (Ships' Doctors) Regulations 1981enKing's Printer of Acts of Parliament1981-08-05 The Merchant Shipping (Ships' Doctors) Regulations 1981InstrumentThe Merchant Shipping (Ships' Doctors) Regulations 1995The Merchant Shipping (Ships’ Doctors) Regulations 1995 reg.1(2)