33 CFR § 160.310 - Definitions.

---
identifier: "/us/cfr/t33/s160.310"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 160.310 - Definitions."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "160.310"
section_name: "Definitions."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "P"
subchapter_name: "PORTS AND WATERWAYS SAFETY"
part_number: "160"
part_name: "PORTS AND WATERWAYS SAFETY—GENERAL"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 70001-70003, 70034, and Chapter 701; DHS Delegation 00170.1, Revision No. 01.4. Subpart C is also issued under the authority of 46 U.S.C. 3715 and 46 U.S.C. 70011."
regulatory_source: "CGD 79-026, 48 FR 35404, Aug. 4, 1983, unless otherwise noted."
cfr_part: "160"
---


# 160.310 Definitions.

As used in this subpart, and only for purposes of this supbpart—

*Acceptable identification* means a:

(1) Passport;

(2) U.S. Permanent Resident Card;

(3) U.S. merchant mariner document;

(4) U.S. merchant mariner credential;

(5) Transportation Worker Identification Credential (TWIC) issued by the Transportation Security Administration under 49 CFR part 1572; or

(6) Seafarer's Identification Document (SID) issued by or under the authority of the government of a country that has ratified the International Labour Organization Seafarers' Identity Documents Convention (Revised), 2003 (ILO 185), meeting all the requirements of ILO 185.

*Commercial service* means any type of trade or business involving the transportation of goods or individuals, except service performed by a combatant vessel.

*Crewmember* means all persons carried onboard a vessel to provide: navigation services; maintenance of the vessel, its machinery, or systems; arrangements essential for propulsion or safe navigation; or services for other persons onboard.

*Foreign vessel* means a vessel of foreign registry or operated under the authority of a country except the United States.

*Navigable waters of the United States* means the same as this term is defined in 33 CFR 2.36(a). This includes a 12-nautical-mile wide U.S. territorial sea as measured from the baseline, U.S. internal waters subject to tidal influence, and certain U.S. internal waters not subject to tidal influence.

*Operator* means any person including, but not limited to, an owner, a charterer, or another contractor who conducts, or is responsible for, the operation of a vessel.

*Passport* means any travel document issued by competent authority showing the bearer's origin, identity, and nationality if any, which is valid for the admission of the bearer into a foreign country.

*Port or place of departure* means any port or place in which a vessel is anchored or moored.

*Port or place of destination* means any port or place in which a vessel is bound to anchor or moor.