GPS For Water

[Imaginos]

I'm late to this thread, but here is what I use: TrackMe
http://www.luisespinosa.com/trackme_eng.html

Here's the paddling path my Touch Pro w/TrackMe recorded during my playtime in Boston harbor among the Tall Ships :

[socalz71]

I would like to suggest you try TrackMe. I use it and its pretty cool wth Google Maps and Google Earth

[Fa310tx]

I noticed that a lot of these programs track altitude. Do you guys know if any of them will log altitude in some format that a cad or landscaping program could interpret?
I could see good use for it in surveying a piece of land for home design (size of lot, grade of driveway, etc...).
JJ

[Imaginos]

If your CAD or Landscape program can interpret the standard GPS or googlemaps/earth data files, you're good to go with TrackMe. I use it in non-internet mode. It tracks GPS coordinates, speed, heading, altitude and more if you wish.
I provided a screenshot. If you were on the page I used to produce it, each of those points on the map are clickable and they provide the data I mention above. Since again, you mention no internet on your phone, you can't take advantage of online/realtime tracking via the web. However offline mode still does the job for me.