Editorial and Source Policy
Last updated: August 12, 2026
USCG Prep publishes independent study material for people preparing for U.S. Coast Guard merchant mariner credential exams. It is not a U.S. Coast Guard or National Maritime Center service, does not issue credentials, and does not replace current official requirements.
How we present study guidance
Our product and blog content is published by the USCG Prep Editorial Team. Articles identify their publication and update dates. When an article discusses credential requirements, regulations, or policies that can change, it links to the relevant primary source so readers can verify the current information before acting on it.
Primary sources for credential decisions
Study material can help you prepare, but only the responsible government source can confirm current eligibility, application, examination, endorsement, medical, or regulatory requirements. Start with these sources:
- National Maritime Center: Merchant Mariner Credential
- National Maritime Center announcements
- Electronic Code of Federal Regulations: Title 46 — Shipping
Corrections and feedback
To report a factual issue or suggest a source, email [email protected]. We review reports against the appropriate primary source and update published material when a correction is warranted.