<Bob wrote in part: SPOT shows their coverage map here> Actually that chart is the estimated coverage not the actual....It states this in the fine print. Again any one intending to use this offshore or needs to contact their technical dept to make sure you will have coverage. You never know if you don't once you get there without some other means of communication. Iridium is the best comm. device to have as it's portable and does work in all but the weird places. It's not cheap but neither is life if you need to get a message out it's priceless! As always YMMV... Dave & Nancy Swan Song Roughwater 58