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Official Razor Diver Courses

DZD is part of the exclusive Razor Official Instructors Team

Take your first steps into the world of side-mount diving, and join the growing community of Razor divers!

The program is designed for divers using the Razor System and was developed by its creator, Steve Bogaerts. It offers divers a specific and integrated training with the Razor System.

DZD is proud to be part of the exclusive Razor Official Instructors Team.

The Razor Side Mount System is a complete integrated system designed specifically for side mount diving. It can be used for both technical and sport diving, with any kind of cylinders or thermal protection.

The development and testing process of the Razor Side Mount System has taken many years and hundreds of dives in some of the most demanding environment, with most dives being conducted in caves by the world’s most experienced side mount diver and cave explorer, Steve Bogaerts and his partner Hp Hartmann. “Necessity is the mother of invention.”

GoSideMount is an unofficial training agency created by Steve Bogaerts and Hp Hartmann. It is born of the desire to provide divers with a refined and specific training in the use of side mount configuration with the Razor System.

Students will be certified from a recognised agency, TDI, and will cover all its standards. The Razor Official Courses will go well beyond this by teaching the specific configuration, gas management, manipulations and protocols of the “bogaertian” integrated course.

General conditions for all DZD overhead diving courses

General conditions for all DZD overhead diving courses

– all overhead courses have a daily training fee of $285 USD per student
– the duration/prices of the courses are thought as minimum
– students should be ready for extra training if necessary
– “Students pay for training, certifications are earned.”

– transfer from the dive center to the dive site and back
– teaching
– use of cylinders, and air / EAN32 fills
– weights, use of tool box, medical O2, drinking water

– gases other than air or EAN32
– personal dive equipment
– educational material (manual, e-learning, etc.)
– entrance fees to the cenote parks
– food or extra services (porter, etc.)

– $260 USD per day per person for two or more students
– please contact us via e-mail for special group/operators’ prices

We give our students the full attention they deserve and give our very best to make the course enjoyable and time-efficient. The courses are performance based, and the student must display the adequate skills and attitude to achieve certification.

We love teaching, and we love having fun, too! Ultimately, diving must be a pleasure, even during a demanding training. We make sure not to lose this from our sight!

DZD offers the following Official Razor Diver Courses:

Razor Basic Side Mount Open Water Diver

Learn the basics of side mount diving in open water environment.

Razor Basic Cave Diver

Take your first step into the cave environment, at intro to cave level.

Razor Full Cave Diver

Execute dives with complex navigation, restrictions and extended penetration at full cave level.

Razor Basic Side Mount Cave Diver

Learn side mount specific skills and protocols fitting for the overhead environment


Ready for an extraordinary adventure?

For more information about Dark Zone courses please e-mail us at
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