---
kind: "section"
citation: "33 C.F.R. § 67.30-10"
title: "33"
number: "67.30-10"
heading: "Sound signals."
url: "https://uscodex.org/cfr/33/67.30-10"
---

# §67.30-10. Sound signals.

- (a) The owner of a Class “C” structure shall install a sound signal if:
  - (1) **The structure is erected on or adjacent to the edge of a—**
    - (i) Navigable channel;
    - (ii) Fairways; or
    - (iii) Line of demarcation; and
  - (2) **The District Commander decides it is necessary for the safety of marine commerce.**
- (b) Sound signals required by [paragraph (a)](#a) of this section must have rated range of at least one-half mile, unless the District Commander prescribes a greater rated range, not to exceed 2 miles.
- (c) The owner of the structure shall operate the sound signal required by [paragraph (a)](#a) of this section whenever the visibility in any direction is less than 3 miles, unless the District Commander establishes a greater or lesser distance of visibility, not to exceed 5 miles.
- (d) Class “C” structures may have sound signals if:
  - (1) Authorized by the District Commander under the provisions of [Subpart 66.01](/cfr/33/subpart66.01.md) of this subchapter; and
  - (2) The sound signal meets the requirements of § [67.10-1 (a)](/cfr/33/67.10-1.md?p=a) and [(b)](/cfr/33/67.10-1.md?p=b).

## Notes

### Amendments

[CGD 72-74R, 37 FR 13513, July 8, 1972]

### Authority

Authority: 14 U.S.C. 503, 544; 43 U.S.C. 1333; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGFR 58-17, 23 FR 3377, May 20, 1958, unless otherwise noted.

### Amendments

[CGD 72-74R, 37 FR 13513, July 8, 1972]