Gear – While the gear is fundamentally identical, divers in their intro tech class (Intro, Tech, Sidemount or the CCR-Air diluent), may notice some fundamental configuration changes. They now have two second stages, each with a separate start stage. Gas planning becomes a detailed, thorough process. The harnesses also have more chrome.
Technical diving is growing in popularity and it didn't take long until it grabbed our attention here at Girls that Scuba HQ! But we had a lot of questions first and a few nerves so we headed to the woman in the know - one of the only female tech instructors in Asia - Theresia Gollner - who is working at Blue Marlin in Gili T, Lombok. She gave us an intro course to twin sets and let us into the wonderful world of technical diving. Here's what she taught us:
Sidemount and technical sidemount were my first courses. Sidemount diving is, as its name implies, where you place your tank in front of you. By the end of the session, my hands were covered with cuts. You can remove the tanks from their clips and place them in front of yourself, Superman-style, to streamline your life. The afternoon dive went much smoother after some adjustments to the harness. I was now comfortable unclipping the harness and 'Superman-ing" with the tanks. Sidemount is a great way to have more freedom than having two people on your back. Matt created obstacle courses, and soon we were flying around them with tanks at our fronts, barrel-rolling, and swimming upside down.
The Sidemount diver's setup is slightly different than the backmount.
Next, it was time to do technical sidemount. This involves adding our deco 50-percent and 100-percent oxygen tanks on each side. You will have a higher profile underwater, so it is important to keep the tanks as close to your body as possible. There are two clips at each side of the waist. You adjust the tank position by inhaling down your tanks. This is where simplicity is key. You also need to switch between tanks every few minutes. This ensures that the pressure in each tank is at the same level, so even if one tank or regulator fails, there will still be gas for you to breathe. Building up experience is the key to comfort, enjoyment and success with new technologies. The next few days were spent doing sidemount dives, budding up with Evolution coowner David Joyce, a highly experienced Tec diver and Trimix instructor. One dive took us to the Japanese Mogami Wreck at 164 feet. I was captivated by the old gas masks, uniforms, and bones that we found.
Sidemount diving originates in cave diving and has since made its way into recreational, non-overhead dives. Simply put, you'll wear your tanks on the side of your body instead of one or two tanks strapped to your back. The tanks attach to the Sidemount BCD with clips and/or long bungee strings, giving you great flexibility. This flexibility allowed cave divers to get their tanks off the surface to make it fit through narrow spaces.
I took my first sidemount and technical sidesmount courses. Sidemount diving, like the name implies, requires you to place your tank on your hands. My hands and knuckles were completely covered by cuts at the end. The idea behind sidemount diving is to unclip your tanks and then place them in front you, Superman style. This will streamline your workflow. After making some adjustments to my harness size, the afternoon dive went more smoothly. I was now comfortable unclipping my harness and "Superman-ing” with the tanks. Sidemount gives you an amazing level of freedom, even if you have doubles on your back. Matt put up obstacle courses. We were soon flying through them with tanks in front, barrel-rolling, swimming upside down and tanks at the rear.
Learn our SSI technical sidemount diver course and get the opportunity to dive with four+ tanks (cylinders) for extended dives. The technical sidemount diver course is an excellent way to get yourself into technical diving as it will train you to handle multiple cylinders on a single dive. Learn also on configuring your sidemount gear and setting up a tec sidemount harness as well as adjusting the sling tanks (cylinders) on your body.
Also, diving sidemount start to be wildly spread across the world even for an open water dive. Why? Because diving sidemount is extremely comfortable and easy to learn.
Sidemount regulators will also be covered. You will usually have one regulator for a long hose and one for a shorter hose with a necklace. Sidemount regs are marked, so that you can identify which tank you are using. This included a swivel joint to allow me to regulate my short hose. You will also receive 2 SPGs, one for each stage.
Technical diving is a combination of passion, training, and experience. Technical diving is not for those who lack any of these three.
I'm not sure when or why I chose to take my Sidemount course. It was, as with many of my diving decisions. I think it was a case where I thought, "Oh, that looks cool. Could be useful. I'm going for it!" I knew Sidemount would be useful and something I could continue to use and improve on. Sidemount certification would be useful for me if I ever wanted to cave dive.
If you want some diving classes alternative and lessons or want to know what's best next for your education, take a look at the three options below.
Know what you’re getting: Prices include instruction and eLearning fees. Bear in mind, the cost of eLearning, by itself, can be worth anywhere from $140 to $280 or more. Thus, a $640 course from us may actually cost the same as a $500 course from someone else if you have to pay for elearning separately.
- Increased Bottom Time A Closed Circuit diver is not concerned with running out of gas because they are only limited by decompression. This can also be reduced by selecting an oxygen partial pressure that provides the diver with virtually limitless bottom times in 60 feet or less of water.