---
kind: "section"
citation: "33 U.S.C. § 2105"
title: "33"
title_heading: "Navigation and Navigable Waters"
number: "2105"
heading: "Definitions"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/33/2105"
units:
  - "Chapter 35 — Artificial Reefs"
---

# §2105. Definitions


For purposes of this chapter—

- (1) The term “artificial reef” means a structure which is constructed or placed in [waters covered under this chapter](#3) for the purpose of enhancing fishery resources and commercial and recreational fishing opportunities.
- (2) The term “State” means a State of the United States, the District of Columbia, Puerto Rico, the United States Virgin Islands, American Samoa, Guam, Johnston Island, Midway Island, and Wake Island.
- (3) The term “waters covered under this chapter” means the navigable waters of the United States and the waters superjacent to the Outer Continental Shelf as defined in [section 1331 of title 43](/usc/43/1331.md), to the extent such waters exist in or are adjacent to any [State](#2).

## Source credit

(Pub. L. 98–623, title II, § 206, Nov. 8, 1984, 98 Stat. 3397.)