How To Become A Sidemount Technical Scuba Diver Guide

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Because single orifice duals and backmounted independencies are less common today, backmounted doubles became popular. Independents have two cylinders strapped to the back of one another with independent regulators. If the 1st stage failed, the diver would only need one cylinder. Single orifice twos were two cylinders that were connected with a regulator and a valve. A failure on the first stage would result in gas loss. Both problems are solved by the isolation manifold doubles that are used today. Each cylinder may be used independently. But, divers can also use the same regulator to breathe gas from both. These doubles are often held together by metal bands. If necessary, the valves can be connected to an isolation manifold. Backmounted doubles diving has a similar profile to regular single-cylinder dives. However, the profile is vertically identical.

They are not issued unless earned. Not just taking part in the course does NOT guarantee certification. For cave courses certification cards may be available from multiple training agencies. C-cards can be purchased for around $30 depending on their agency. An instructor will be able to tell you more.

Sidemount cylinder mounting was first used for cave diving. It has since become more popular in technical diving. They take the dual cylinders apart, one for each, and place them on either side. The diver can't breathe from either cylinder if the regulator fails, but this allows for easier access to valves. Sidemount diving gives the diver an increased horizontal profile and a smaller vertical profile.

You may also be interested in the PADI tec Sidemount Diving Course.

Sidemount and technical were my first courses. Sidemount diving involves placing your tanks in your hands. I was so numb that my fingers and knuckles had been cut by the end. The idea is to take the tanks off of your hands and let them flow out in front. After making adjustments to the harness's size, the afternoon dive went much easier. I was now able to unclip the harness and 'Superman' with the tanks. Sidemount provides an amazing degree of freedom. Matt installed obstacle courses, and we soon found ourselves flying around them while holding tanks at our feet. We also tried barrel-rolling and swimming upside down.