‘Caverns Measureless to Men’ by Sheck Exley, one of the pioneers of cave diving in Florida, USA. He also wore ‘Basic Cave Diving: A Blueprint for Survival’ which studies many cave diving accidents.
To make dives beyond 130ft, decompression divers will add Helium to the cylinders. Then they can explore the realm of the uncommon. Their experiences at wrecks and reefs are often less frequent than those of astronauts who visit the moon.
Skills (specific): Throughout tech programs, the dive skills specific to that category are practiced until they become flawless. Line skills and navigation are perfected for overhead diving. Decompression divers can execute stops and manage gas without blinking an ear. Rebreather divers take great care in building, testing and disassembling their equipment to ensure its optimal functionality. The first level of certification lays the foundation for each course, with further training as necessary. Each step takes you deeper, or makes these skills more difficult. It is a way to become a better diver.
Don't worry if you are worried about how everything will fit together. You will learn how to set up your Sidemount equipment. Also, how to measure and adjust your bungees and clips so your tanks stay in line next to your legs. Your instructor will guide you through all this!
Sidemount cylinder mounting was developed for cave diving. They have been more popular in technical diving ever since. They are able to seperate the dual cylinders and mount them on either end of the diver's body. While this prevents the diver from breathing from one cylinder in case of a failure of the regulator, it allows them to have easier access to the valves. Sidemount diving provides a diver with a more horizontal profile but a smaller vertical one.
The benefits of rebreathers include the ability to extend your diving time by avoiding large cylinders and instead recycling the gas exhaled from the diver. They also scrub the CO2 out of the air and inject prescriptive amounts gas from smaller cylinders. This can significantly increase your dive time, especially for deep dives. The configuration of the rebreathers will determine the shape they create. They can be either sidemounted or back.
I have just arrived in Malapascua Island on the Philippines. Over the next two months, I will work my way to becoming a Tec dive instructor. I've been a recreational dive instructor in Bali for two years. I would like to add more experience to my portfolio. Sidemount PCB was my first experience with technical diving. Tom West (PADI instructor-trainer) made me a certified Tec-50 diver.
2nd stage regulator and exposure suit with side pocket, BCD sidemount. SMB. Cutting tool. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulation. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulatory. 2nd stage regulator. 2nd Stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd stage regulator. 2nd hose
Sidemount diving was originally developed in cave diving. However, it has now made its way into recreational non-overhead diving. Simply put, sidemount diving means that you no longer wear one or two tanks on your back. Instead, you wear your tanks on either your side. The tanks can be attached to a Sidemount BCD with clips and/orbungee cords. This gives you great flexibility. Cave divers were able to use this flexibility to allow them to transport their tanks underwater and fit into tight spaces.
The next day it was on to technical sidemount, which means adding our deco 50-percent oxygen and 100-percent oxygen tanks on either side. This increases your profile underwater so you must keep the tanks as trim as possible against your body. You have a couple of clips on each side of your waist. As you breathe down your tanks and they become positively buoyant, you adjust your tank position to the second clip position. The aim here is to be as streamlined as possible. Every few minutes you also switch your breathing from one tank to the other. That way the pressure in each tank runs down at roughly the same rate, and if there is a failure with either tank or regulator, you’ll still have gas to breathe. As with all new things, building up experience is key to comfort and enjoyment. I spent the next few days doing deco dives with the sidemount rig, buddied up with Evolution co-owner David Joyce — a hugely experienced Tec diver and Trimix instructor. On one dive we visited the Japanese Mogami wreck down at 164 feet, where I was beguiled by the bits of old gas masks, uniforms and even a few bones we saw.
Skills (general) – The introductory tech diver will practice their trim and buoyancy with the new equipment configuration. This builds the foundation of efficient diving. Once the foundation is there the student can practice locomotion and move on to more advanced skill practice.
Sidemount rigs were initially designed for cave diving. It allows divers to pass through small cracks and restrictions (tiny hole) much more easily than the traditional back mount rig.
Your Sidemount BCD harness is made up of a bladder, sliding D-rings and bungee cords. Your tank position and trim will depend on their fit. Your instructor may spend a lot of time getting them right.
You will also learn how to use Sidemount regulators. Usually, you will have one regulator on a long hose as well as one regulator on a short hose with a necklace. Unlike your normal regs, Sidemount regs are also marked so you can easily distinguish which tank you are breathing from. During my training, this included a swivel joint for my short hose regulator. In addition, you will have 2 SPGs – one for each first stage.
Technical diving (also known as tec diving or tech diving) is non-professional scuba diving that exceeds the agency-specified limits of recreational diving.