---
kind: "section"
citation: "33 C.F.R. § 67.20-10"
title: "33"
number: "67.20-10"
heading: "Sound signal."
url: "https://uscodex.org/cfr/33/67.20-10"
---

# §67.20-10. Sound signal.

- (a) **The owner of a Class “A” structure shall—**
  - (1) Install a sound signal that has a rated range of at least 2 miles; and,
  - (2) **Operate the sound signal when the visibility in any direction is less than 5 miles.**
- (b) The District Commander may waive any requirements in [paragraph (a)](#a) of this section if he or she finds that a structure is so close to other structures and so enveloped by the sound signals on other structures that it is not a hazard to navigation.

## Notes

### Amendments

[CGD 72-74R, 37 FR 13513, July 8, 1972, as amended by USCG-2001-10714, 69 FR 24984, May 5, 2004]

### 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, as amended by USCG-2001-10714, 69 FR 24984, May 5, 2004]