Completed Merchant Mariner Credential applications (Form CG719B and supporting documentation) should be emailed to MMCApplications@uscg.mil.
Medical Certificate ONLY Applications (719K or 719K/E) are processed separately and should be sent via email to MEDAIP@uscg.mil.
If you submit an incomplete application (719B or 719K), you will either receive an awaiting information (AI) letter or the application will be returned to you, and YOUR CREDENTIAL WILL BE DELAYED!