50 CFR § 300.173 - Vessel identification.

---
identifier: "/us/cfr/t50/s300.173"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 300.173 - Vessel identification."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "300.173"
section_name: "Vessel identification."
chapter_name: "INTERNATIONAL FISHING AND RELATED ACTIVITIES"
part_number: "300"
part_name: "INTERNATIONAL FISHERIES REGULATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 951  16 U.S.C. 1801  16 U.S.C. 5501  16 U.S.C. 2431  31 U.S.C. 9701"
regulatory_source: "61 FR 35550, July 5, 1996, unless otherwise noted."
cfr_part: "300"
---


# 300.173 Vessel identification.

Each U.S. vessel fishing under the Treaty must be marked for identification purposes, as follows:

(a) A vessel used to fish on the high seas within the Convention Area as defined in § 300.211 must be marked in accordance with the requirements at §§ 300.14 and 300.217.

(b) A vessel not used to fish on the high seas within the Convention Area as defined in § 300.211 must be marked in accordance with either:

(1) Sections 300.14 and 300.217, or

(2) The vessel's name and U.S. Coast Guard Documentation number (or if not documented, the state registration number) followed by the letter U must be prominently displayed where they are clearly visible both from the air and from a surface vessel. Numerals and the letter U must meet the size requirements of § 660.704 of this title. Markings must be legible and of a color that contrasts with the background.

[76 FR 73520, Nov. 29, 2011]