46 CFR § 1.01-05 - Definitions of terms used in this part.

---
identifier: "/us/cfr/t46/s1.01-05"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 1.01-05 - Definitions of terms used in this part."
title_number: 46
title_name: "Shipping"
section_number: "1.01-05"
section_name: "Definitions of terms used in this part."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "A"
subchapter_name: "PROCEDURES APPLICABLE TO THE PUBLIC"
part_number: "1"
part_name: "ORGANIZATION, GENERAL COURSE AND METHODS GOVERNING MARINE SAFETY FUNCTIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 552; 14 U.S.C. 503; 46 U.S.C. 7701; 46 U.S.C. Chapter 93; Secs. 101, 888, and 1512, Pub. L. 107-296, 116 Stat. 2135; DHS Delegation No. 00170.1, Revision No. 01.4; § 1.01-35 also issued under the authority of 44 U.S.C. 3507; and § 1.03-55 also issued under the authority of 46 U.S.C. 3306(j)."
regulatory_source: "CGD 88-033, 54 FR 50376, Dec. 6, 1989, unless otherwise noted."
cfr_part: "1"
---


# 1.01-05 Definitions of terms used in this part.

(a) The term *Commandant* means the Commandant of the Coast Guard.

(b) The term *District Commander* means an officer of the Coast Guard designated as such by the Commandant to command all Coast Guard activities within a district.

(c) The term *Area Commander* means an officer of the Coast Guard designated as such by the Commandant to command all Coast Guard activities within an Area.

(d) The term *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.

(e) The term *Merchant mariner credential or MMC* means the credential issued by the Coast Guard under 46 CFR part 10. 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.

[CGD 88-033, 54 FR 50376, Dec. 6, 1989, as amended by USCG-2006-24520, 71 FR 35818, June 22, 2006; USCG-2006-24371, 74 FR 11213, Mar. 16, 2009]