Cave passages formed over millions years of water erosion and extending thousands of feet from their entrance are reserved only for overhead divers. They are stunning in their beauty and peacefulness, but only because they were formed so long ago.
‘Shadow Divers’ by Robert Kurson is about the identification of a German submarine that was tried to be identified by John Chatterton and his crew during almost a decade.
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.
By allowing divers to exhale gas, the rebreather can extend their diving capabilities. The rebreather will then recycle the gas and inject the required amount of gas into the cylinder. This can dramatically increase the dive time when compared to using double the size and weight cylinders, especially for deeper dives. You can have rebreathers back- or sidemounted. The profile they create will depend on their configuration.
Sidemount is not something you'll be doing during cave diving training. Instead, you should look at our CDS Basics Orientation Course.
Specific Skills - These are the skills required to perform specific types of diving. Navigation and line skills are developed until they are effortless for overhead diving. Decompression divers have the ability to execute stops and gas management plans without a blink of an eye. Rebreather divers test, build and then disassemble their equipment meticulously to ensure it works properly. Each course requires skills that are established at the initial level. Then, it is possible to move on to higher levels. Each step further or hones these skills, and adds more challenges to make a diver well-rounded and knowledgeable.
It's normal to be anxious about how it will all work out. Your instructor will assist you with everything!
Backmounted doubles came into use in part because of the problems with backmounted independents and single orifice doubles, neither of which are as common in modern diving. Independents are two cylinders strapped to one’s back with independent regulators on each one. If a 1st stage was to fail the diver was down to one cylinder. Single orifice doubles were two cylinders linked together with a valve, and one 1st stage regulator. If a first stage failed on a single orifice doubles set all the gas would be lost. The isolated manifold doubles used today eliminate both of those problems. Each cylinder can be worked independently, but the diver can also breathe gas from both cylinders out of one regulator. This form of doubles is typically held together with metal bands and the valves are linked with an isolation manifold, allowing the two to be separate if needed. Backmounted doubles diving is similar to regular single cylinder backmount, offering a profile that is vertically the same.
1. Your personal informations (name, email, etc). 2. Choose your preferred date 3. Simply submit your question/inquiry to ask.
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.
‘Diving into Darkness’ by Phillip Finch is telling the story about an Australian cave diver trying to recover a body in a South African cave called Bushman’s hole.
This course will require the same equipment, as your goal is to learn the operation and setup of the equipment you will use during your cave diving or tech diver training. This includes:
All our Tec diving lessons (open circuit or closed circuit rebreather) and technical scuba diving classes are given at our Scotty's dive center headquarters facility, located in the Shangri-la hotel in Mactan, Cebu province. If you are not a guest of the Shangri-la hotel, you can always walk in, or we can pick you up at your hotel.
In general Sidemount is more task loading for a diver as the pressure in each tank needs to be balanced in order to have enough gas for an out of air diver and to be balanced on each side.
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).