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.
Academics - Technical courses have similar academic requirements to other classes. Students will conduct some self-study and present their findings to their instructor. A technical course requires that you plan your dives in advance. This is a crucial step to ensure a safe and successful dive. The gas management discussion in overhead and deep diving is more complex than what most divers are used too. A computer program can be used to calculate gas volumes and reserves.
This course will teach you how to set up and operate the equipment that you will use in your training as a cave diver or tech diver. This includes:
Certificate cards: These are issued only to those who have earned them. Certification is not guaranteed by simply taking part in a course. Multiple training agencies might offer certification cards for cave courses. C-cards usually cost about $30, depending on which agency you choose. Talk to your instructor for details.
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.
Overhead divers who have been trained in overhead diving are entitled to cave passages created over millions of year of water erosion. These passages can stretch thousands of yards from the entrance. They offer tranquility and beauty that is unmatched by the amazing time they took to form.
Tech diving is gaining popularity. We were so excited to see it here at Girls that ScubaHQ! There were a lot of questions, and we were nervous so we headed to Theresia Geller, a Blue Marlin instructor in Gili T. Lombok. She taught us the basics of twin sets and introduced us to technical diving. Here's what she taught:
It doesn't matter if you get your news from television, magazines, or a friend, diving under the sea is exciting and fascinating. How can we continue to explore? What is technical diving?
Mentality - Technical diving still has its fun side. It's about seeing cool stuff, just as sport diving. But technical divers see things longer, deeper and more hidden than the sport diver. Although technical divers are still fun-focused, they are also regularly focused. There are still jokes to be made and laughs can be had. But, diving planning and execution must be done with a sense of seriousness. Divers are exposed to risks.
One of the big risks for a technical diver is decompression sickness. It occurs when nitrogen gas cannot exit the body thru respiration on ascent as the ambient pressure decreases. Therefore stops have to be executed on ascent in order to avoid a pressure difference too big so nitrogen bubbles can be formed. Buoyancy control is very important to control the stops on ascent and increase efficiency for off-gassing of nitrogen. Another important skill is proper breathing which makes metabolism efficient. Trim, which we call a proper tech diving position such as horizontal with a slight arch in the back, looking forward and knees at a 90 degree angle with fins pointing back. Trim prevents stirring up sediments on the bottom as well as most efficient movement in the water. And of course proper finning techniques to avoid overexertion are mandatory to make a diver achieve maximum performance. Now you might say, we want to have fun when we go diving and not be a machine.
Being a technical diver requires a lot of training, experience, and passion. The added risks of technical diving are not worth the risk if any one of these is missing.
An Open Water Diver is all you need to get started in Sidemount diving. It is important to have good buoyancy, trim, and be able set up your equipment and manage it yourself. Sidemount diving can bring a new dimension to your equipment setup and skills.
Sidemount diving is easy with an Open Water Diver. You will need to be able to handle your equipment yourself. Sidemount diving adds a new dimension in terms of equipment setup and skill.
SDI/TDIIncludes two open water divesMinimum of 18 years, or 15 with parental consent
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).