If you have a First-Class Pilotage or Local Limited Merchant Mariner Credential application, submit it to your local Regional Examination Center responsible for the routes requested. ALL other Merchant Mariner Credential applications are submitted directly to NMC. Please send any documents in Adobe PDF format only, and include your Last Name, First Name, and Mariner Reference Number (or last digits of your SSN) in the subject line of your e-mail. OR get in contact with US today and we will walk you through the application process with the goal of helping you avoid delays and a headache!