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Big Blue Tech - Koh Tao - Thailand                                                             Facebook  Twitter  GooglePlus

Deeply shallow
Blue-Hole-trimixSeeing as the maximum depth you can achieve in the gulf of Thailand is around 55 metres, why would you bother with tech diving here? Just as most non-divers think that scuba divers breathe a tank of oxygen when diving, most recreational divers believe that tech diving is all about attaining depth.... It's not.

The deepest open circuit scuba dive ever was achieved by Nuno Gomes in 2005. In the Red Sea in Egypt he dived down to 318.25 metres. He did this for the sake of going deeper than anyone else, and his dive consisted of dropping down a line, then coming straight back up it, albeit 12 hours later! Within the tech diving community they call it soap on a rope diving. But why people do this is the same reason that people landed on the moon. To push the boundaries of what is possible. The physiological data gathered from such dives is invaluable towards gaining a greater understanding of what happens to our body on normal recreational dives. But you'd have to be a little bit crazy to want to go to 300 metres. Most tech divers aren't interested in seeing if they could get to those kinds of depths.

They're interested in doing something useful on a tech dive, i.e. having a dive objective. That may involve a task such as finding a new dive site, exploring a wreck or cave, or performing geological or biological research. Some such dives may be very deep, but the depth will always be a by-product of the objective of the dive, and you can't just get some tech gear and go as deep as you want, you have to progressively learn to use your equipment properly, and fully understand the procedures for going into decompression and diving deeper.

Koh Tao is a great place to learn how to dive, and technical diving is no different. We have some fantastic shallow dive sites for teaching the TDI intro to tech course (the first tech course), but we also have deeper dive sites for courses such as TDI decompression procedures and extended range. The point is, you begin the training in a benign environment, and then progress on to deeper and more challenging dive sites for more advanced training once you've got the skills nailed. Then if you go anywhere in the world such as the Blue hole in Darhab, Egypt, you will be well placed to undertake the additional training required to take you beyond 55 metres- you won't have to start from scratch.

But let's get back to basics. If you do the intro to tech course, you will be qualified to dive on a twinset to whatever depth you are already qualified to dive to. If you've done your deep speciality course, that would be 40 metres. However, given that you'll have 4,400 litres of air on a twinset instead of 2,200 on a single tank (at 200 bar pressure), it makes even more sense on the average dive site to go no deeper than say 30 metres, and, (if you have your nitrox speciality) to use 32% nitrox as your back gas and get a sizeable No Decompression Limit (NDL) that you can actually utilise, without having to end your dive because your air supply demanded you to. If you're a marine biologist conducting a survey of a dive site, it makes perfect sense that you would want to maximise the time allowed underwater for each survey. So from that point of view a single tank is not really much use to you... some of the most successful marine scientists are tech divers. 

So tech diving really doesn't need to be all about going as deep as you can. Whatever kind of diving you want to do, Big Blue Tech can provide the training that you need, in a progressive manner. For more information on your options for becoming qualified, send an email to Rick or Donny. The email address is at the top of our homepage.

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