Segment shipboard OT from other zones with firewalls or equivalent security devices able to monitor network traffic, alert in real time, and separate IT from OT, the crew zone from the rest and, where applicable, OT systems from each other (east-west micro-segmentation); section 3.3 asks for at least OT, IT and crew zones.
This control maps to 3 controls across 2 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 3 it maps to, and the evidence behind each claim, over MCP and REST.