Tech Diving

Tech Diving

Technical diving with Total Diving

You are looking for pure adrenaline in scuba diving? Extreme experiences? Total Diving is the expert in technical diving.

What is technical diving?

Technical diving is defined as diving beyond recreational diving (in terms of depth and/or non-decompression limit). Each dive must be planned right down to the last minute. Based on the chosen profile, a special gas blend will be required (nitrox, air, helium). Technical diving is not the typical progression in scuba diving; it’s a special path for daring divers who want unique dive experiences.

What type of equipment do I need for technical diving?

In term of equipment, he basic principal is redundancy. Due to the nature of technical diving we have a virtual threshold. By going beyond recreational dive limits, a technical diver ascending to the surface directly will be at an extreme risk of decompression accident. Therefore a technical diver must be able to respond autonomously to any problem that may arise underwater. Redundancy means having the double of all equipment essential to the diver’ survival.

Many configurations are available to the technical diver:






Each of these configurations has their advantages and disadvantages 

What is backmount configuration?

This is the typical technical diving configuration, as well as the most used. It’s a system with two tanks on the back combined by bands and a manifold. The manifold is a pipe that links gases from the two cylinders together. It’s equipped with an isolator permitting the separation of gases in case of an emergency. You can protect half your gases at any time. 

You can attach two complete regulators (1st and 2nd stage) to the manifold. Should a problem arise on a regulator, you another complete regulator to safely complete your dive. 

The harness is specific to technical diving. It must be solid enough to support cylinders, with a backplate sturdy enough for the weight. A strap passes between the legs to secure the harness in place. A minimum of 4 large D-Rings are required to attach the stages (extra cylinders and gases) and accessories.

The inflation device must also have a redundancy because a technical diver’s safety is linked to his ability to stay at specific depths based on the decompression model.

Many other aspects of this configuration are covered in Tec40, 45, and 50 courses.

What is Sidemount diving?

This configuration is not exclusive to technical diving. Many recreational divers use it. It is also an acceptable configuration for technical diving. This configuration does not entail a rigorous discipline for overall safety. 

Without an isolator, air management becomes crucial. There should never be more than 200 psi difference between cylinders. The biggest advantage is having cylinders horizontal makes the regulators more accessible. In terms of valve management, seeing the actual valves make it easier to manage than in backmount configuration. 

Sidemount equipment is adapted to the individual; whereabouts backmount equipment is adapted to the cylinders. The Sidemount diver must attach equipment to their bodies, so a lot of adjustment is needed to achieve the desired result. Trim is much easier to achieve.

Sidemount was created to pass through constricted caverns, but it is not necessarily adapted to all dive environments. Manipulated the different traps in very cold water with large gloves can be challenging.

PADI Tec Sidemount training is required for technical diving courses. 

What is Rebreather diving?

There are more and more rebreather enthusiasts in Quebec. Helium prices being  exorbitant for dives deeper than 150-165 feet, many divers turn to rebreathers. For more information concerning helium diving, check out our PADI Tec 65 (trimix normoxic ) and Trimix (trimix hypoxic) courses. 

As the name says, rebreathers reuses exhaled air by adding oxygen to it. The CO2 produced by the diver is absorbed by the sofmoline filter. It’s like having a nitrox or trimix blender right on your back!

We are specialised in the KISS Rebreather. We also have an instructor for the Hollis Prism 2.

You are interested in rebreathers? Come try it out in the pool, it’s an interesting experience. Come join us! 

What courses do I need to do technical diving?

We offer the complete PADI TecRec program for divers as well as instructors. Total Diving has two PADI TecRec instructors on staff. 

For more information on technical diving  Click here