33 CFR § 149.585 - What are the requirements for sound signals?

---
identifier: "/us/cfr/t33/s149.585"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 149.585 - What are the requirements for sound signals?"
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "149.585"
section_name: "What are the requirements for sound signals?"
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "NN"
subchapter_name: "DEEPWATER PORTS"
part_number: "149"
part_name: "DEEPWATER PORTS: DESIGN, CONSTRUCTION, AND EQUIPMENT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1504, 1509; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, unless otherwise noted."
cfr_part: "149"
---


# 149.585 What are the requirements for sound signals?

(a) Each pumping platform complex must have a sound signal, approved under subpart 67.10 of this chapter, that has a 2-mile (3-kilometer) range. A list of Coast Guard-approved sound signals is available from any District Commander.

(b) Each sound signal must be:

(1) Located at least 10 feet, but not more than 150 feet, above mean high water; and

(2) Located where the structure of the platform, or equipment mounted on it, does not obstruct the sound of the signal in any direction.