---
kind: "section"
citation: "50 C.F.R. § 300.173"
title: "50"
number: "300.173"
heading: "Vessel identification."
url: "https://uscodex.org/cfr/50/300.173"
---

# §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](/cfr/50/300.211.md) must be marked in accordance with the requirements at §§ [300.14](/cfr/50/300.14.md) and [300.217](/cfr/50/300.217.md).
- (b) A vessel not used to fish on the high seas within the Convention Area as defined in [§ 300.211](/cfr/50/300.211.md) must be marked in accordance with either:
  - (1) Sections [300.14](/cfr/50/300.14.md) and [300.217](/cfr/50/300.217.md), 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](/cfr/50/660.704.md) of this title. Markings must be legible and of a color that contrasts with the background.

## Notes

### Amendments

[76 FR 73520, Nov. 29, 2011]

### Authority

Authority: Sec. 401, Pub. L. 108-219, 118 Stat. 616 (16 U.S.C. 1821 note).

### Source

Source: 69 FR 31535, June 4, 2004, unless otherwise noted.

### Authority

Authority: 16 U.S.C. 951 et seq., 16 U.S.C. 1801 et seq., 16 U.S.C. 5501 et seq., 16 U.S.C. 2431 et seq., 31 U.S.C. 9701 et seq.

### Source

Source: 61 FR 35550, July 5, 1996, unless otherwise noted.

### Amendments

[76 FR 73520, Nov. 29, 2011]