Guidance

MGN 657 (M+F) Amendment 1 requirements for fixed aerosol fire extinguishing systems for use in small vessel machinery spaces

Maritime and Coastguard Agency installation and testing requirements for new Fixed Aerosol Fire Extinguishing Systems & UK Approved Bodies permitted to approve such testing

• From: Maritime and Coastguard Agency
• Published: 28 November 2025

Documents

MGN 657 (M+F) Amendment 1 requirements for fixed aerosol fire extinguishing systems for use in small vessel machinery spaces

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MGN 657 (M+F) Amendment 1 Appendix

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Details

Further context, include target audience information from beginning notice:

Notice to all Shipowners, Ship Operators, Masters and Officers of Ships, Ship Designers, and Shipbuilders of Fishing Vessels Under 24m, Small Commercial Codes Vessels, Domestic Passenger Vessels of class III to VI(A), Surveyors, and Providers of Aerosol Fire Suppression Systems.

Published 28 November 2025