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Merchant Mariner Credential (MMC) Application Process

Step 1: TWIC

Step 2: Submit Complete Application

Step 3: Transit from REC to NMC

Step 4: Application Evaluated

Step 5: Credential Printed

Step 6: Credential Mailed

Obtain MMC Image

The tabs below explain the MMC application process and types of applications.  You must apply at an REC and include all supporting documentation and proper signatures.  Missing information will cause applications to be delayed or rejected.
DE and QA are not MMC endorsements. To apply for DE/QA, click here.



The Application Acceptance Checklist explains what items constitute an application for an MMC.

The MMC application package must be submitted to your local Regional Examination Center (REC) in person, by mail or electronically. Do NOT submit your application package directly to the NMC as this WILL delay your application. If your application is not complete, you may receive an Awaiting Information (AI) email and/or letter requesting more information from the REC.

To learn more about the types of credentials you may apply for, visit our Checklists page.

In most cases, fees are required for MMC transactions and our Fees page has information on submitting payment, general questions, and refunds.

In general, most applications are evaluated for safety & suitability, medical and professional qualification items. Medical certificates can be stand alone documents.

For questions on medical fitness for mariners visit our Medical Certificate page.

Visit our MMC Evaluation page to learn more on how to document Sea Service.

After your application has been evaluated and a determination has been made you will receive an email and/or letter notification indicating AI, Approval to Test (ATT), or Approved to Print.

If you have questions on taking an exam, visit our Examinations page.