33 CFR § 168.05 - Definitions.

---
identifier: "/us/cfr/t33/s168.05"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 168.05 - Definitions."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "168.05"
section_name: "Definitions."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "P"
subchapter_name: "PORTS AND WATERWAYS SAFETY"
part_number: "168"
part_name: "ESCORT REQUIREMENTS FOR CERTAIN TANKERS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Section 4116(c), Pub. L. 101-380, 104 Stat. 520 (46 U.S.C. 3703 note); section 711 Pub. L. 111-281, 124 Stat 2905; Department of Homeland Security Delegation No. 170.1, para. 2(82)."
regulatory_source: "CGD 91-202, 59 FR 42968, Aug. 19, 1994, unless otherwise noted."
cfr_part: "168"
---


# 168.05 Definitions.

As used in this part—

*Disabled tanker* means a tanker experiencing a loss of propulsion or steering control.

*Double hull tanker* means any self-propelled tank vessel that is constructed with both double bottom and double sides in accordance with the provisions of 33 CFR 157.10d.

*Escort transit* means that portion of the tanker's voyage through waters where escort vessels are required.

*Escort vessel* means any vessel that is assigned and dedicated to a tanker during the escort transit, and that is fendered and outfitted with towing gear as appropriate for its role in an emergency response to a disabled tanker.

*Laden* means transporting in bulk any quantity of applicable cargo, except for clingage and residue in otherwise empty cargo tanks.

*Single hull tanker* means any self-propelled tank vessel that is not constructed with both double bottom and double sides in accordance with the provisions of 33 CFR 157.10d.

*Tanker master* means the licensed onboard person in charge of the tanker.

*Tanker owner or operator* means the owner or shoreside organization (individual, corporation, partnership, or association), including a demise charterer, responsible for the overall management and operation of the tanker.

[CGD 91-202, 59 FR 42968, Aug. 19, 1994, as amended by USCG-2012-0975, 78 FR 50340, Aug. 19, 2013]