---
kind: "section"
citation: "33 C.F.R. § 175.105"
title: "33"
number: "175.105"
heading: "Definitions."
url: "https://uscodex.org/cfr/33/175.105"
---

# §175.105. Definitions.

- (a) Visual distress signal means a device that is approved by the Commandant under [46 CFR part 160](/cfr/46/part160.md) or certified by the manufacturer under 46 CFR parts [160](/cfr/46/part160.md) and [161](/cfr/46/part161.md).
- (b) **Coastal waters—** means:
  - (1) The U.S. waters of the Great Lakes (Lake Erie, Huron, Michigan, Ontario, and Superior);
  - (2) The territorial seas of the United States; and
  - (3) Those waters directly connected to the Great Lakes and territorial seas (i.e., bays, sounds, harbors, rivers, inlets, etc.) where any entrance exceeds 2 nautical miles between opposite shorelines to the first point where the largest distance between shorelines narrows to 2 miles, as shown on the current edition of the appropriate National Ocean Service chart used for navigation. Shorelines of islands or points of land present within a waterway are considered when determining the distance between opposite shorelines.

## Notes

### Amendments

[CGD 76-183, 44 FR 73024, Dec. 17, 1979, as amended by CGD 82-073, 49 FR 7119, Feb. 27, 1984; 49 FR 20815, May 17, 1984]

### Source

Source: CGD 76-183, 44 FR 73024, Dec. 17, 1979, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 4302; DHS Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: CGD 72-120R, 38 FR 8115, Mar. 28, 1973, unless otherwise noted.

### Amendments

[CGD 76-183, 44 FR 73024, Dec. 17, 1979, as amended by CGD 82-073, 49 FR 7119, Feb. 27, 1984; 49 FR 20815, May 17, 1984]