The Code of Safe Working Practices for Merchant Seafarers (COSWP) is a comprehensive set of guidelines and best practices designed to ensure the safety and health of seafarers working on merchant vessels. It provides guidance on safe working practices and procedures to follow on board ships to minimise risks and prevent accidents.

It is a statutory requirement for the current edition of the code to be carried on board all UK ships, other than fishing vessels and pleasure craft. The code contains essential health and safety information, and it must be made available to any seafarer on board the ship who requests it.

The MCA has revised and updated the Code to align its language with the Government Digital Service (GDS) guidelines, making the content more accessible and easier to read. All references to relevant legislation and guidance have been reviewed and updated, providing users with accurate signposting to source material and further information where required.

Main updates to the 2026 Edition:

- Major safety updates on the use of lifting equipment: Chapter 19

- Updated guidance on enclosed spaces: Chapter 15

- Updated emergency procedures: Chapter 4.