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Cardigan Bay Range Danger Area MOD Aberporth - Download To View
Admiralty Notices to Mariners (NMs)
Admiralty Charts and Publications should be maintained so that they are fully up-to-date for the latest safety-critical navigational information. The Admiralty Notices to Mariners service provides all of the data you need to maintain our products.
http://www.ukho.gov.uk/productsandservices/martimesafety/pages/nmpublic.aspx