StacksVerified U.S. regulatory reference

46 CFR §161.011-5

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
EPIRBs are typed as follows:
  1. (a)Category 1—EPIRBs are capable of floating free of a vessel and activating automatically if the vessel sinks.
  2. (b)Category 2—EPIRBs are manually removed from the mounting bracket and activated.