GPS Tools for Diving

Free GPS software to manage your hand held:
easygps.com

divespots.com
A very neat web site that is a community run database of diving locations: dive site info/history, photos, reviews, maps, and the best part? Downloadable GPS data to help you find it! Pretty rad.

You might need a serial-to-USB cable to connect your GPS to your compy:

Sabrent USB to Serial Adapter from TigerDirect

Neat Projection Toy

This is a neat tool that lets you play around with many different projections. Pan and rotate the globe and the map projection to see which methods are better for rendering areas of a 3D surface in 2D: uff.br/mapprojections

Intro to servicing a scuba regulator

With the purchase of a BC and regulator setup, I now my own full set of scuba gear. I found some interesting articles that explains what goes into the annual maintenance of a regulator, and a neat glossary of oceanographic and diving equipment terms at dtmag.com