46 C.F.R. § 131.835 Portable fire extinguishers.
Title 46 - Shipping
(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 ( (b) If only one type and size of portable fire extinguisher is carried, the number may be omitted.
Title 46: Shipping
PART 131—OPERATIONS
Subpart H—Markings for Fire Equipment and Emergency Equipment
§ 131.835 Portable fire extinguishers.
