Mariner Credentialing

Online mariner credential verification tool temporarily unavailable

Editor’s note: The Homeport Credential Verification Tool is back online as of Sept. 13, 2019.

The National Maritime Center posted a notice on its website that the online Homeport Credential Verification Tool is experiencing technical difficulties and may not show the most current data.

While technicians work to resolve the issue, credentials may be verified by contacting the National Maritime Center at or 1-888-IASKNMC (domestic calls only). From outside the United States, use your country’s exit code and dial 1-304-433-3400.

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.

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