SDI/TDI Side Mount Diver

What makes the new SDI/TDI Sidemount Diver program better?  It’s Complete Feature: The new SDI/TDI Sidemount Diver program is far more than just another “how to” book on sidemount diving. It’s a complete, comprehensive set of training materials designed to work together to make learning  sidemount diving easy. These materials…

Continue reading