Code of Practice – Cyber Security for Ships UK Department for Transport
2017

This Code of Practice should be read by board members of organisations with one or more ships, insurers, ships’ senior officers (for example, the Captain/Master, First Officer and Chief Engineer) and those responsible for the day-to-day operation of maritime information technology (IT), operational technology (OT) and communications systems. It does not set out specific technical or construction standards for ship systems, but instead provides a management framework that can be used to reduce the risk of cyber incidents that could affect the safety or security of the ship, its crew, passengers or cargo.

Available here