Glad I found Sailnet
Join Date: Jul 2008
Thanked 51 Times in 50 Posts
Rep Power: 8
No problem on the posting in this thread.
One other nice thing about this app is that you can take into account the length of your boat. Our anchor roller is 40 feet from the helm. If I had a Raymarine unit, I'd have 40 feet of error build in, even if I setup the anchor alarm while anchoring. (Granted, I usually lower the anchor while backing up, but trying to time that is the last thing on my mind.)
The length-of-boat may not seem like a big issue, but the other day I was in a tight little channel and simultaneously watching the markers on the Driod's gps. I was not past a marker (according to the gps) and yet the marker was right off my starboard, midships, about 10 feet from the boat. It was about time to start the turn. So yes, it does matter where your gps unit (or antenna) is on your boat and you do need to take it into account. The gps units are that accurate it seems.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!