46 CFR 169.563 - Firehose.
(b) Vessels less than 90 feet in length must have commercial firehose or equivalent of not over 11/2 inch diameter or garden hose of not less than 5/8 inch nominal inside diameter. If garden hose is used, it must be of a good commercial grade constructed of an inner rubber tube, plies of braided cotton reinforcement and an outer rubber cover, or of equivalent material, and must be fitted with a commercial garden hose nozzle of good grade bronze or equivalent metal.
(c) Vessels of 90 feet or greater must have lined commercial firehose that conform to Underwriters' Laboratories, Inc. Standard 19 or Federal Specification ZZ-H-451. The firehose must be fitted with a combination nozzle approved under § 162.027 of this chapter.
Title 46 published on 2014-10-01
no entries appear in the Federal Register after this date.