From the National Maritime Center:

Marine Safety Information Bulletin 06-23 Canceled

On April 22, 2025, Marine Safety Information Bulletin Marine Safety Information Bulletin (MSIB) 06-23 titled “Merchant Mariner Credentialing Delays” was canceled.  The National Maritime Center (NMC) is no longer experiencing merchant mariner credential (MMC) issuance delays, therefore the verification of authority afforded in MSIB 06-23 is no longer required.  All mariners sailing under the authority of their credential should have a valid MMC and medical certificate with them.

As a continued reminder, it is strongly recommended all mariner applicants apply for any credential at least 90 days in advance.  Also, an MMC can be renewed at any time and may be post-dated up to 8 months in advance with no change between expiration and renewal dates.

For inquiries related to application status or credential verification, please see our recent NMC bulletin dated April 14, 2025.

Sincerely,

/B. W. Clare/

Bradley W. Clare
Captain, U.S. Coast Guard
Commanding Officer