"How to build underwater robots and other projects"
By Harry Bohm & Vickie Jensen

They say this is a great book,, I am going to get one myself. I think Books a million may have them. Look online. Goodluck on your search and if you come up with some results let me know. Thanks Tom.

I found a link for the book,, shows you how to build ROV submarines and other things. http://www.powells.com/cgi-bin/bibli...4-0968161006-0

Here is another neat book that you may want to try out..

Build Your Own Programmable Lego Submersible: Project: Sea Angel AUV (Autonomous Underwater Vehicle)
You may find it at the link above.. Hope this helps Tom