46 CFR § 35.40-25
Fire extinguishers—TB/ALL
April 15, 2021
Each fire extinguisher shall be marked with a number and the location where stowed shall be marked in corresponding numbers in at least 1⁄2 inch figures.
Each fire extinguisher shall be marked with a number and the location where stowed shall be marked in corresponding numbers in at least 1⁄2 inch figures.