Your Sidemount BCD is a harness with a bladder. There are also a number of sliding D-rings, zips, and bungee ropes. It is important that they are in the right place and fit for your tank.
It's becoming increasingly popular and Girls that ScubaHQ noticed it quickly! There were lots of questions and nerves. So we went to Theresia Gullner, one of the few female tech instructors in Asia. She works at Blue Marlin Gili T Lombok. We were then introduced to the twin sets and given an introduction to technical diving. Here's what we learned from her:
Television, magazines, stories from a friend – it doesn’t matter the source, exploring the underwater world and escaping the surface is enticing and exciting. So how do we keep exploring? What exactly is technical diving?
Sidemount can provide a number of benefits for any diver, but is especially well suited for cave diving. (It was, after all, cave divers who invented sidemount.) Among these benefits:
Technical divers dive at depths less than the recreational limit of 40 meters/130 feet. Technical divers can access underwater caves and other locations that aren't accessible by recreational diving.
The Sidemount setup for diving is slightly different to the backmount setup, and the equipment is also slightly different.
Nowadays diving sidemount became popular even in open water as you get more streamlined than having a tank on your back, it is not hurting your back, and you can get a lot of fun as it is extremely comfortable to dive sidemount.
Sidemount divers tend to use two tanks. You can, however, use just one tank (I believe it's called the'monkey'), or use more than two tanks when doing deco dives.
My first courses were sidemount and technical sidemount. Sidemount diving, as the name suggests, involves placing your tank my hands and knuckles were covered in cuts by the end of the session. The idea is that you can unclip the tanks and put them out in front of you, Superman style, thus streamlining yourself. After some sizing adjustments to the harness, the afternoon dive went much more smoothly. I was now comfortably unclipping and ‘Superman-ing’ with the tanks. Compared to having doubles on your back, sidemount offers an incredible level of freedom. Matt set up obstacle courses and we were soon flying around them with tanks held out front, barrel-rolling and even swimming upside down.
You can do eLearning and coursework at home to help support local dive shops. Then, travel to complete your training dives. For a referral, contact your local PADI Dive Center.
For dives deeper than 56m gas mixes called Trimix are used. In order to reduce narcosis and reduce the toxic effects of Nitrogen and Oxygen, Helium is added which has no negative effect on our body to very deep depth. There are additional risks with helium but those start at depths of around 180m. In history tests have been executed with different noble gasses, however they all turned out to be toxic for the human body, so helium was the only one adequate for diving. One other gas that has no effect on the human body is Hydrogen but due to its high risk of fire and explosion in contact with oxygen, the blending of it is very difficult if not almost impossible with the techniques we use currently.
Rebreathers allow for greater diving ability by eliminating large cylinders. Instead, they recycle the gas exhaled by divers, scrub the CO2 and inject small amounts of gas. This can greatly increase the time it takes to dive, especially if you are doing deeper dives. Rebreathers can either be sidemounted or back, and their profile is determined by the configuration.
There are three parts to certification. Knowledge development, skill practice and open-water diving. You can do all three on your own, or take a break to complete one of them.
Specific skills - The tech programs teach specific dive skills that are required for each category of diving. Navigation and line skills for overhead diving are practiced until they become automatic. Without blinking an eye, decompression divers are able to plan and execute gas management stops and stops. To ensure the equipment's perfect functionality, rebreather divers carefully build, test, and disassemble their equipment. Each course is covered in the initial level of certification. From there, you can move up to the next level. Each level of certification takes these skills deeper and makes them more challenging. This helps divers become well-rounded, knowledgeable and well-prepared.
- 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.
To begin a technical diving course, you must have completed the following prerequisites: a PADI Advanced Open Water Diver certificate or equivalent, a PADI Enriched Air Diver certificate or equivalent, and a PADI Deep Diver certificate or proof of at least 10 dives to 30 metres/100 feet.
2-3 hours
Even with small cylinders, you can usually dive for 2-3 hours (rebreathers typically have two 2/3l cylinders or one 3/5l cylinder).