46 C.F.R. § 28.150 Emergency Position Indicating Radio Beacons (EPIRBs).
Title 46 - Shipping
Each vessel must be equipped with an emergency position indicating radio beacon (EPIRB) as required by 46 CFR part 25, subpart 25.26. Note: Each vessel which uses radio communication equipment must have a Ship Radio Station License issued by the Federal Communications Commission, as set forth in 47 CFR part 80.
Title 46: Shipping
PART 28—REQUIREMENTS FOR COMMERCIAL FISHING INDUSTRY VESSELS
Subpart B—Requirements for All Vessels
§ 28.150 Emergency Position Indicating Radio Beacons (EPIRBs).

