50 CFR § 660.504 - Vessel identification.

---
identifier: "/us/cfr/t50/s660.504"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 660.504 - Vessel identification."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "660.504"
section_name: "Vessel identification."
chapter_name: "FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE"
part_number: "660"
part_name: "FISHERIES OFF WEST COAST STATES"
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. 1801  16 U.S.C. 773  and 16 U.S.C. 7001"
regulatory_source: "61 FR 34572, July 2, 1996, unless otherwise noted."
cfr_part: "660"
---


# 660.504 Vessel identification.

(a) *Official number.* Each fishing vessel subject to this subpart must display its official number on the port and starboard sides of the deckhouse or hull, and on an appropriate weather deck so as to be visible from enforcement vessels and aircraft.

(b) *Numerals.* The official number must be affixed to each vessel subject to this subpart in block Arabic numerals at least 14 inches (35.56 cm) in height. Markings must be legible and of a color that contrasts with the background.