Maritime Safety Information

View the latest safety-critical navigational information

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Notices to Mariners (NMs)

Weekly updates that provide bridge crews with the latest safety-critical navigational information. They can be downloaded for free here, or purchased as weekly bulletins from your ADMIRALTY Distributor.

Go to Notices to Mariners

Radio Navigational Warnings (RNWs)

NAVAREA I and UK Coastal navigational warnings reproduced online.

Go to Radio Navigational Warnings