Mark_VTfisherman
Lieutenant
- Joined
- Nov 29, 2008
- Messages
- 1,489
Re: Fish Finder
Most of the maps are taken from old paper maps which were drawn with info sounded by drop weights. The HD maps are actually electronically sounded by sonar and recorded with GPS data. Standard "Base Maps" have proven quite inaccurate here in Vermont; our tolling patterns have recorded us as passing hundreds of feet ashore across dry land!
the maps sometimes don't match the GPS data. I don't know why. I have not seen the Navionics info do that.
If I had the time, and the money for new computer and software, I could be all over the make-your-own-map stuff. I think it would be so cool to record GPS data simultaneous with my sonar feed, export it to my PC and save it for notes and merging later data. But I have no idea what that would cost to get set up to do that of if it is even commercially available to do that!
More power to you but I need to keep it simple and just fish for now, but I could probably learn a lot from you!
......If you view the HD lake maps, they have allot of info. Unfortunatly, they are usually only a dozen or so per state. Generally, always bigger waters. Most small and many medium size lakes, have very little detail. ............I just want to buy one map, and use it eveywhere, PC, chartplotter, or print. Be able to update it and add crib notes, along with waypoints and markers.
Most of the maps are taken from old paper maps which were drawn with info sounded by drop weights. The HD maps are actually electronically sounded by sonar and recorded with GPS data. Standard "Base Maps" have proven quite inaccurate here in Vermont; our tolling patterns have recorded us as passing hundreds of feet ashore across dry land!
the maps sometimes don't match the GPS data. I don't know why. I have not seen the Navionics info do that.If I had the time, and the money for new computer and software, I could be all over the make-your-own-map stuff. I think it would be so cool to record GPS data simultaneous with my sonar feed, export it to my PC and save it for notes and merging later data
. But I have no idea what that would cost to get set up to do that of if it is even commercially available to do that!More power to you but I need to keep it simple and just fish for now, but I could probably learn a lot from you!