46 CFR § 117.64
Emergency Position Indicating Radiobeacons (EPIRB)
April 15, 2021
Each vessel that operates on the high seas, or that operates beyond three miles from the coastline of the Great Lakes, must have on board an FCC Type Accepted Category 1, 406 MHz EPIRB, installed to automatically float free and activate.
[CGD 85-080, 61 FR 911, Jan. 10, 1996; 61 FR 20556, May 7, 1996]