46 CFR 111.60-9 - Segregation of vital circuits.

Regulations last checked for updates: Dec 18, 2025

Title 46 - Shipping last revised: Nov 24, 2025

View all text of Subpart 111.60 [§ 111.60-1 - § 111.60-23]

§ 111.60-9 - Segregation of vital circuits.

(a) General. A branch circuit that supplies equipment vital to the propulsion, control, or safety of the vessel must not supply any other equipment.

(b) Passenger vessels. (1) Each passenger vessel with firescreen bulkheads that form main fire zones must have distribution systems arranged so that fire in a main fire zone does not interfere with essential services in another main fire zone.

(2) Main and emergency feeders passing through a main fire zone must be separated vertically and horizontally as much as practicable.

authority: 46 U.S.C. 3306,3703; DHS Delegation No. 00170.1, Revision No. 01.2. Section 111.05-20 and Subpart 111.106 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905

source: CGD 74-125A, 47 FR 15236, Apr. 8, 1982, unless otherwise noted.

cite as: 46 CFR 111.60-9