Some good information I scraped from the net.
The best beacon to have is the one you have with you when you need it!
EPIRBs are required to float in an upright position totransmit (perform best when floating)
PLBs float so they won’t get lost, some need pouch to float.(They need to be held out of the water or attached high up on PFD for best transmission)
EPIRBs are required to transmit for a minimum of 48hrs at tempsdown to -40C or -20C (Longer in nominal temps)
PLBs are required transmit for a minimum 24 hrs at tempsdown to -20C (Longer in nominal temps)
EPIRBs are required to be manually activated in or out oftheir bracket or automatically activated when out of the bracket and in the water
PLBs are required to be manually activated only
EPIRBs are required to have a strobe light (or flashing light)
PLBs are not required to have a strobe (some newer versionshave flashing LEDs)
EPIRBs are designed to be mounted in a bracket or carried ina ditch bag
PLBs are designed to be worn or carried on your persons
EPIRBs are registered to the vessel
PLBs are registered to the person and are legal to be usedon land as well
I would also add that if you are out on the boat by yourself, a PLB strapped to your body is better than an EPIRB in a bracket if you go overboard. If you have competent crew that could activate an EPIRB in your absence, then an EPIRB is the way to go.
Please remember you need to be prepared to survive the environment you may find yourself in. The further off shore you go, the longer it will take rescuers to get on scene. An EPRIB floating in the water attached by its tether is easier to manage than holding a PLB in the air. I would also suggest that if you have a PLB, than find a way to strap it to your life jacket in advance. (Up in the collar bone area) Treading water with one arm up in the air will be very tiresome.
Both are required to be registered with NOAA. It’s quick,easy and free and can be done online at
http://www.beaconregistration.noaa.gov/