What I Offer
Technical Diver Training
Interested in exploring beyond recreational diving limits?
Great Lakes Tech Diving offers personalized technical diving instruction, from TDI Intro to Tech through Advanced Nitrox and Decompression Procedures, as well as advanced trimix and Hollis Prism 2 rebreather training.
Whether you’re just getting started or looking to expand your capabilities, you’ll benefit from small classes, flexible scheduling, and decades of real-world Great Lakes wreck diving experience.
Cylinder Inspection & Maintenance Training
Great Lakes Tech Diving offers PSI-PCI Visual Cylinder Inspector, Valve Repair Technician, and Oxygen Cylinder Cleaning Technician courses for individual divers and dive industry personnel.
Training is available in person in Northwest Ohio, and through live, interactive online classes by appointment.
Learn more about our courses, upcoming training dates, and registration options.
Winter 2027 Training Opportunities
Make the most of the winter months by expanding your diving knowledge and preparing for the upcoming season.
Great Lakes Tech Diving is offering PSI-PCI Visual Cylinder Inspector, Valve Repair Technician, and Oxygen Cylinder Cleaning Technician courses in January, February, and March 2027.
In-person classes are held in Wauseon, Ohio, near Toledo. Live, interactive online training is also available by appointment.
Upcoming Courses
| Jan 23, 2027 | PSI Visual Cylinder Inspector | Wauseon, OH |
| Jan 24, 2027 | PSI Valve Repair/Oxygen Cylinder Cleaning | Wauseon, OH |
| Feb 20, 2027 | PSI Visual Cylinder Inspector | Wauseon, OH |
| Feb 21, 2027 | PSI Valve Repair/Oxygen Cylinder Cleaning | Wauseon, OH |
| March 6, 2027 | TDI Gas Blender Training | Wauseon, OH |
| March 20, 2027 | PSI Visual Cylinder Inspector | Wauseon, OH |
| March 21, 2027 | PSI Valve Repair/Oxygen Cylinder Cleaning | Wauseon, OH |
| May 15-19, 2027 | TDI Advanced Nitrox/Deco Procedures | Gilboa Quarry |
| June 21-26, 2027 | TDI Hollis Prism 2 Air Diluent Diver | Gilboa Quarry |
| By Appointment | Now Booking All Courses for 2027 | |
| By Appointment | Hollis Prism 2 Try Dive |
Have Questions? Ready to Pull the Trigger and Enroll?
Then use the button to contact me.
Great Lakes Tech Diving Dispatch
Technical diving, Great Lakes shipwrecks, and lessons learned from more than 50 years underwater.
Subscribe to my free newsletter for articles about diving techniques, equipment, training, and exploring the historic shipwrecks of the Great Lakes.
The name says it all
Great Lakes Tech Diving. It’s what I do. It’s what I teach. The Great Lakes contain some of the best shipwrecks in the world. The water in the Great Lakes is fresh and cold, perfect for preserving shipwrecks rather than destroying them. You can visit wooden sailing ships that have been on the bottom for 100 years that are still intact with the masts still standing. Many of these wrecks are beyond sport diving limits and require training in decompression diving and mixed gas diving.
My name is Rick Kruzel and I offer technical diver training tailored for the Great Lakes environment. If you want to dive the Great Lakes, your training should reflect that. I have been teaching technical diving courses for over 20 years in the Great Lakes. If you want to dive the deep wrecks of the Great Lakes, I can help you achieve it!