OUPV & 100-Ton Master · Credentials — MMC Validity
A Merchant Mariner Credential (MMC) is generally valid for a period of:
- A2 years
- B3 years
- C5 years✓ Correct
- D10 years
Explanation
The MMC is issued for a 5-year term and must be renewed before expiration. Renewal generally requires meeting recency-of-service or an approved refresher/open-book exam, a current medical certificate, and continued TWIC eligibility.
Authority: 46 CFR Part 10
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