46 CFR 131.835 - Portable fire extinguishers.
(a) Except as provided by paragraph (b) of this section, ach portable fire extinguisher must be marked with a number, and the site of its stowage must be marked with a corresponding number at least 13 millimeters ( 1/2-inch) high.
(b) If only one type and size of portable fire extinguisher is carried, the number may be omitted.
Title 46 published on 2015-12-02.
No entries appear in the Federal Register after this date, for 46 CFR Part 131.