Precision Diving represents the efforts of Duane Johnson to promote excellence and adventure in scuba dive training in the Chicago and Great Lakes area. For individuals seeking high quality scuba classes, I provide a very comprehensive and rigorous curriculum. I believe that only such a program will ensure divers have the ability and knowledge to increase their comfort and confidence underwater. I've built my training programs based on my own personal experience in Nitrox, Trimix, tech, shipwreck, cave diving and DIR training.

But most of all, I have fun!!!

- 2010 Technical Diving Schedule Ready

- Winter Schedule Now Available.

- New shirts are available. Support Great Lakes diving.

- 2010 Training schedule in the works. If you're looking for a class, contact me.