# The Merchant Shipping (International Safety Management (ISM) Code) Regulations 2026, Regulation 10: Duty of master


The master of a ship to which these Regulations apply must operate that ship in accordance with the safety management system on the basis of which one of the following documents has been issued—
(a) in the case of a United Kingdom ship or a non-United Kingdom ship flying the flag of a Convention country, the Safety Management Certificate or Interim Safety Management Certificate; or
(b) in the case of a non-United Kingdom ship flying the flag of a State which is not a Convention country, the document that demonstrates, to the satisfaction of the Secretary of State, an equivalent level of compliance with each requirement of the ISM Code applicable to that ship.

---
Source: https://www.legislation.gov.uk/uksi/2026/194/regulation/10 (the official version)
Page: https://openlegislation.uk/merchant-shipping-international-safety-management-ism-code-regulations-2026/regulation-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.