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U.S. Maritime Alerts and Advisories Subscriptions

Maritime industry stakeholders who wish to be added to the automatic email distribution list for U.S. Maritime Alerts and Advisories should self-register at, even if they were previously registered, prior to November 31st, 2023.  This GovDelivery-based self-registration site will help all U.S. government agencies participating in this system better determine which maritime industry stakeholders are and are not currently receiving U.S. Maritime Alerts and Advisories.

Any subscription changes, questions, problems, or recommendations should be forwarded, along with a current phone contact number, to

Please note that the U.S. Maritime Alerts and Advisories System is meant primarily to highlight certain threats to U.S. commercial vessels and mariners operating on international voyages and is not meant to cover all regional threats as the resources listed below, among others, already cover a wide variety of these threats:

U.S. Coast Guard Local Notices to Mariners

U.S. Coast Guard Broadcast Notices to Mariners

U.S. Notices to Mariners

Worldwide Navigational Service Navigation Warnings

Navigation Warnings on the Web | IHO

Office of Naval Intelligence Worldwide Threat to Shipping Reports

Regional Maritime Security Centers (this list is NOT all-inclusive)

United Kingdom Maritime Trade Operations (UKMTO)

International Maritime Security Construct (IMSC)

Maritime Security Center Horn of Africa (MSCHOA)

NATO Shipping Center

IMB Piracy Reporting Center

Maritime Domain Awareness for Trade – Gulf of Guinea (MDAT-GoG)

Regional Cooperation Agreement on Combating Piracy and Armed Robbery Against Ships in Asia Information Sharing Center (ReCAAP ISC)

Republic of Singapore Information Fusion Center (IFC)

European Union Naval Force (EUNAVFOR) Operation ATALANTA