46 CFR § 120.550 - General alarm systems.

---
identifier: "/us/cfr/t46/s120.550"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 120.550 - General alarm systems."
title_number: 46
title_name: "Shipping"
section_number: "120.550"
section_name: "General alarm systems."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "K"
subchapter_name: "SMALL PASSENGER VESSELS CARRYING MORE THAN 150 PASSENGERS OR WITH OVERNIGHT ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS"
part_number: "120"
part_name: "ELECTRICAL INSTALLATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "CGD 85-080, 61 FR 928, Jan. 10, 1996, unless otherwise noted."
cfr_part: "120"
---


# 120.550 General alarm systems.

(a) All vessels with overnight accommodations must be equipped with a general alarm system.

(b) A vessel of more than 19.8 meters (65 feet) in length with overnight accommodations for more than 49 passengers must have a general alarm that meets the requirements of § 113.25 in subchapter J of this chapter.

(c) The public address system required by § 121.610 of this chapter may be used to sound the general alarm signal.