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In addition, your Sidemount rig includes tank bands, clips, and probably some more bungees to stow away your regs nicely. The clips will be connected to your harness and again, their position is important for the position of your tanks.
To dive, you must have a minimum of fitness and good health. Before diving, you may need to be cleared by a doctor if your health is not in good condition.
The sidemount rig was initially created for cave diving. This allows the diver through small cracks (tiny holes) more quickly than the back mount rig.
One of the most important changes in equipment cave divers have made since the start of the century was the switch from sidemount to backmounted doubles. Sidemount is a popular choice for cave divers. It's also possible that sidemount cave divers are more common than backmount cave divers.
The next day was technical sidemount. This means that we added our deco 50 and 100 percent oxygen tanks on either side. This can increase your profile underwater. It is important that you keep your tanks as small as possible. The clips can be found on each side. As your tanks become buoyant, you will adjust your tank position to fit the second clip. Here, the goal is to be as efficient as possible. Each few minutes, you switch your breathing between the tanks. By doing this, the pressure in each of the tanks will decrease at roughly the exact same rate. In the event that a tank or regulator fails you will still be able to breathe. It is important to gain experience with any new thing. I spent the next few nights doing deco dives with the sidemount rig. I was buddied with Evolution coowner David Joyce who is a very experienced Tec diver as well as a Trimix instructor. One dive saw us visit the Japanese Mogami Japanese Mogami sank at 164 feet. It was here that I was seduced by old gas masks and uniforms as well as a few bones.
The entry-level tech diver will be trained to optimize their equipment to reduce drag and avoid dangling gear. This will ensure a maximum profile for efficient propulsion, awareness and propulsion.
Technical diving was something that I never had an interest in at first. I remember laughing at the Tec divers and wondering why anyone would need more equipment. I love the feeling you get when you are close to nature. Tom had a reputation for being an inspirational teacher. It seemed to me that I should at least try.
These cards are only issued to those who have earned them. Participating in a course is not a guarantee of certification. Certification cards may be offered by multiple agencies for cave courses. C-cards cost $30 to $30 per card, depending on the agency. Ask your instructor for more information.
Divers who are comfortable with sidemount diving can also enjoy open-water dives. Why? Because sidemount diving is very easy and comfortable.
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.
Sidemount Diver was one of my most challenging courses. This was due to the fact that my instructor Fiona, from Big Blue Tech, a trusted dive center in Koh Takao, included more skills and dives than I needed. My task load was always manageable so we practiced skills repeatedly. This included mask removable, tank removable underwater, out of air drills, and SMB deployment. We also kept our trim.
Technical diving (also known as tec diving or tech diving) is non-professional scuba diving that exceeds the agency-specified limits of recreational diving.
The depth range of oxygen rebreathers (simple closed circuit) is limited to approximately 6 m, beyond which the risk of acute oxygen toxicity rises to unacceptable levels very quickly.
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.