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SeaClear II up and running... and now?
I had the same problem. The solution is NOT to start your GPS
's software first. Start the laptop with the USB GPS
plugged in, count to sixty or so, and then start Seaclear. It should work. I bought two of the damn USB GPSes before I figured out that the GPS
software that indicates your satellite acquisition, lat/lon, etc. prevents Seaclear from using the assigned port.
In other words, let Seaclear provide confirmation that your USB GPS
Hope this helps. It took me a number of tries before this worked, but it's working now, and I'm the odd fellow walking around the park behind my house staring at a laptop and muttering "two point seven knots SSW! Cool!"
I assume you know where to acquire and how to load charts. That's a little awkward as well in Seaclear until you get the hang of it, then it's a great little program with a load of useful features.