46 CFR § 76.05-15
Fire main system
April 15, 2021
(a) Fire pumps, hydrants, hose, and nozzles shall be installed on the following vessels:
(1) On all self-propelled vessels.
(2) After July 1, 1957, on all barges with sleeping accommodations for more than six persons.
(b) The arrangement and details of the fire main system shall be as set forth in subpart 76.10.