Re: PLB vs EPIRB what and why?
In my mind a PLB is fine for coastal and near-coastal sailing.
A PLB battery is good for about 24 hours, an EPRB is good for 48. There are other differences, but the PLB should be fine,.
I use one for near-coastal (100 miles offshore from Vancouver Island) and I teach on different boats.
Offshore its an EPIRB.
I will not rely on a cell phone. The VHF radio is a good choice for my Vancouver Island trips as the CG has good reception and the area has lots of traffic. There is no cell service for most of the outside of the Island.
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As I sail, I praise God, and care not. (Luke Foxe)