---
kind: "section"
citation: "33 C.F.R. § 165.3"
title: "33"
number: "165.3"
heading: "Definitions."
url: "https://uscodex.org/cfr/33/165.3"
---

# §165.3. Definitions.


The following definitions apply to this part:

Credential means any or all of the following:

- (1) **Merchant mariner's document.**
- (2) **Merchant mariner's license.**
- (3) **STCW endorsement.**
- (4) **Certificate of registry.**
- (5) **Merchant mariner credential.** Merchant mariner credential or MMC means the credential issued by the Coast Guard under [46 CFR part 10](/cfr/46/part10.md). It combines the individual merchant mariner's document, license, and certificate of registry enumerated in 46 U.S.C. subtitle II part E as well as the STCW endorsement into a single credential that serves as the mariner's qualification document, certificate of identification, and certificate of service.

## Notes

### Amendments

[USCG-2006-24371, 74 FR 11213, Mar. 16, 2009]

### Authority

Authority: 46 U.S.C. 70034, 70051, 70124; 33 CFR 1.05-1, 6.04-1, 6.04-6, and 160.5; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 79-034, 47 FR 29660, July 8, 1982, unless otherwise noted.

### Amendments

[USCG-2006-24371, 74 FR 11213, Mar. 16, 2009]