Each hand portable fire extinguisher must be marked with a number, and the location where it is stowed must be marked with a corresponding number. The marks must be at least
1/2 inch high. Where only one type and size of hand portable fire extinguisher is carried, the numbering may be omitted.
source: CGD 83-005, 51 FR 896, Jan. 9, 1986, unless otherwise noted.
cite as: 46 CFR 169.737