Here is an emergency position-indicating radio beacon that can save your life if you get stuck during a boating adventure. The ACR GlobalFix V4 EPIRB relays your location to search & rescue satellites. It has a 66-channel GPS for fast acquisition. It lets the Coast Guard know who and where you are.
The GlobalFix V4 doesn’t require any subscription fee to work. It has a user replaceable battery that lasts up to 10 years.