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The top link on the above post is my article from Divespots.com...also published twice in Underwater Magazine. Search Youtube: "underwater gps" - to see a video of my latest application of this 10 year project (no predictable data cable / ext. antenna) Mark, Marathon FL Keys

The crew of the JP McGruder (Key West / "Atocha")-- have used my simple gps method in the past. (no data cable / antenna)...the latest incarnation of the method can be seen on Youtube by searching...."underwater gps" - (no surprise, there) The product promoted during DEMA sounds promising...my...

*The MSN group listed above no longer exists...check out my video on Youtube by searching "underwater gps" -- a low-tech solution...

I became interested in underwater nav during scores of beach dives in Ft. Lauderdale. As on land, gps is not a replacement for basic skills but is a great tool. I've been using gps while diving for about 10 years (as seen in Underwater Magazine)...check out the youtube video by searching...

Here's a simple way to seal a tube: Make a small sleeve that slides over the tube...you can cut a piece from a coupler / repair sleeve, or whatever works. glue this in place 1" or so from the top. *caution, if you use pvc glue, make a cut all the way through the sleeve (so the ring pulls...

I'm the author of the deploy and recover method mentioned above...the msn group no longer exists...check out the video on Youtube by searching, "underwater gps". It shows a new adaptation of the original method.

*I've been using gps underwater for about 10 years (no data cable / external antenna)...you can find my video on Youtube...just search "underwater gps"---a link for a free book is listed at the end. The original method (as seen in Underwater Magazine and Divespots.com), was a deploy and recover...

I've got your flag!! See my design (made from a boat fender) at: http://groups.msn.com/divergps *enter as shown...not a "www" great flag...almost no drag

I'm the above-mentioned person using Magellan GPS underwater. (You may have seen my recent article in Underwater Magazine). A free eBook is available at: http://groups.msn.com/divergps *(a non-commericial site...nothing for sale). I use one of 3 possible deploment methods, depending on...

have been using a simple approach for over 3 year (published in Underwater Mag. nov/dec 02 info at http://groups.msn.com/divergps **No power cable/antenna set-up is needed I gain "updates"...Only as needed ...to keep an eye on the anchor position...and to mark points of interest...