Welcome to our Merchant Mariner Credential (MMC) requirements page. On this page you can use the selection box in the next section to learn about the various Coast Guard requirements from the OUPV Captain to Master of vessels of any gross tons licenses. Additionally, you can find information for qualified ratings such as Able Seaman, Tankerman, Lifeboatman as well as for the RFPNW and Able Seafarer Deck STCW endorsements.  We recently added a section, which includes the latest Coast Guard changes and policy regarding the Seafarers’ Training, Certification and Watchkeeping (STCW) Code.

NOTICE:  Effective April 15, 2009 the U.S. Coast Guard will not process any applications for original or renewal of a Merchant Mariner Credential (MMC) unless that mariner also possesses a Transportation Worker Identity Credential (TWIC) card or has proof that they have applied for a TWIC card.  Please visit our Resources page for information regarding obtaining your TWIC card or click here for the TSA website.


NMC and the U.S. Coast Guard are constantly reviewing and updating policies. Here is the latest regarding STCW policy:

Your Key To Understanding Merchant Mariner Credential (MMC) STCW Endorsements.»


New or revised Merchant Mariner Credential checklists regarding STCW: