---
kind: "section"
citation: "46 C.F.R. § 10.207"
title: "46"
number: "10.207"
heading: "Identification number."
url: "https://uscodex.org/cfr/46/10.207"
---

# §10.207. Identification number.


For recordkeeping purposes only, a mariner's official MMC identification number is the individual's social security number. However, a unique serial number, called the mariner reference number, and not the social security number, will appear on the credential.


## Notes

### Amendments

[USCG-2006-24371, 74 FR 11216, Mar. 16, 2009, as amended by USCG-2004-17914, 78 FR 77888, Dec. 24, 2013]

### Authority

Authority: 14 U.S.C. 503; 31 U.S.C. 9701; 46 U.S.C. 2101, 2103, 2104, 2110; 46 U.S.C. chapter 71; 46 U.S.C. chapter 73; 46 U.S.C. chapter 75; 46 U.S.C. 7701, 8903, 8904, and 70105; Executive Order 10173; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: USCG-2006-24371, 74 FR 11216, Mar. 16, 2009, unless otherwise noted.

### Amendments

[USCG-2006-24371, 74 FR 11216, Mar. 16, 2009, as amended by USCG-2004-17914, 78 FR 77888, Dec. 24, 2013]