Commercial Vessel Compliance

3/16/2017: New merchant mariner credential booklets


The National Maritime Center (NMC) announced that it has refreshed and improved the merchant mariner credential (MMC) booklet.

The new design is complete, and the supply of the current MMCs is being depleted. The NMC will begin to issue the updated MMC when the supply of current booklets is exhausted, likely within the next week.

The new MMCs feature an improved layout with graphic images of historic lighthouses, the Eads Bridge, the Merchant Marine Emblem, and a first-order Fresnel lens. Additionally, the cover of the MMC has been stiffened for greater durability.

All currently active credentials will remain valid until their printed expiration dates. There will be no change to endorsement labels that are issued as a result of an application for a raise of grade or increase in scope of a valid MMC.

View the announcement for full details and sample pages of the new credentials.

Check the NMC website periodically for updated information. If you have questions or feedback regarding the new MMC, please contact the NMC by using our Online Chat or Ticketing system, by e-mail at, or by calling 1-888-IASKNMC (1-888-427-5662).

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.

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