Regulatory update

Underwater Radiated Noise (URN)

MEPC 84 agreed in principle to extend the URN experience-building phase to end-2028; the Revised Guidelines remain voluntary.

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Operational Explanation

MEPC 84 agreed in principle to extend the URN experience-building phase to end-2028; the Revised Guidelines remain voluntary.

MEPC.1/Circ.906/Rev.1 voluntary Revised URN Guidelines; MEPC 84 outcome.

The EBP extension and policy-roadmap work create no mandatory shipboard requirement.

A Company may adopt a voluntary URN management plan during EBP without calling it a certificate requirement.

Writing EBP until 2026, possible extension, or turning the extension into a mandatory obligation.

Mistake	Consequence	How to Avoid It
Writing EBP until 2026, possible extension, or turning the extension into a mandatory obligation.	Non-compliant decision or treatment	Follow the approved arrangement and applicable sources

Evidence of the approved arrangement, procedures, records, competence, defect management and consistency with statutory/class/maker requirements.

Does EBP end in 2026?

MEPC 84 agreed in principle to extend it to end-2028.

Are the Guidelines mandatory?

No.