Trade & Shipping · US
US Maritime Cyber Rule
US-flagged vessels and regulated maritime facilities must run approved cybersecurity plans under a Coast Guard rule.
ForVessel and facility security officers, and the cybersecurity officers named under the rule.
What’s changing, and when
The Coast Guard's rule on cybersecurity in the marine transportation system took effect on 16 July 2025. It covers US-flagged vessels, offshore facilities and regulated maritime facilities, which must train their people, assess their systems and report cyber incidents. Each must submit its Cybersecurity Plan to the Coast Guard for approval no later than 16 July 2027.
- Jul 2025 Rule takes effect
- Jul 2027 Cybersecurity Plans due for approval
Why it can’t happen in one step
Every vessel and facility runs its own mix of old and new operational systems, which are assessed, fixed and documented one site at a time.
How Polymonial carries you across
- Incident reports reach only the authorities entitled to them.
- Records of every assessment and change that cannot be quietly altered.
- Move to stronger protection without disrupting operations.
Trust that travels.
Secure, trusted and under your control.