---
kind: "section"
citation: "33 C.F.R. § 67.10-1"
title: "33"
number: "67.10-1"
heading: "Apparatus requirements."
url: "https://uscodex.org/cfr/33/67.10-1"
---

# §67.10-1. Apparatus requirements.


The sound signal required by §§ [67.20-10](/cfr/33/67.20-10.md), [67.25-10](/cfr/33/67.25-10.md), and [67.30-10](/cfr/33/67.30-10.md) must:

- (a) Have its maximum intensity at a frequency between 100 and 1,100 Hertz;
- (b) Sound a 2-second blast every 20 seconds (2 seconds sound, 18 seconds silence) unless otherwise authorized by the District Commander;
- (c) Have the rated range required by [§ 67.20-10](/cfr/33/67.20-10.md), [§ 67.25-10](/cfr/33/67.25-10.md), or [§ 67.30-10](/cfr/33/67.30-10.md);
- (d) Have a height not exceeding 25 feet;
- (e) Have not more than eight sound sources;
- (f) Be approved by the Coast Guard under [§ 67.10-15](/cfr/33/67.10-15.md); and
- (g) **Be permanently marked with—**
  - (1) The date of Coast Guard approval;
  - (2) The manufacturer and date of manufacture;
  - (3) A model designation;
  - (4) The approved range; and
  - (5) **The power necessary to comply with the provisions of paragraph (c) of this section.**

## Notes

### Source

Source: CGD 72-74R, 37 FR 13512, July 8, 1972, unless otherwise noted.

### 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.