46 CFR § 162.039-4 - Marine type label.
(a) In addition to all other markings, every semi-portable extinguisher must bear a label containing the “marine type” listing manifest issued by a recognized laboratory. This label will include the Coast Guard approval number, thus: “Marine Type USCG Type Approval No. 162.039/___.”
(b) All such labels are to be obtained only from the recognized laboratory and will remain under its control until attached to a product found acceptable under its inspection and labeling program.