THIS WEEK IN BUNAKEN: We congratulate Arto and Jimmy who finished their IDC yesterday and wish them all the best for the IE tomorrow. Check out the pic of Arto diving with a CCR – he loved the quiet, no bubbles experience!! Also this week barracudas galore on the day trip, lots of sharks, schools of tuna, pontohi sea horses and some devil rays!
Last week we undertook our deepest dive yet to 120m. One of our guests Iain visited us with his rebreather and decided to take advantage of the tec diving facilities offered by our sister company BunakenTec. These services include full support for trimix diving on both open circuit and rebreather, and paticipation in deep exploration dives to search for the rare dinosaur fish called the Coelecanth (read previous blog The Coelecanth, Living Fossil in Bunaken).
Brendon is our TEC Manager/Instructor/Diver at BunakenTec, and he organised the 2nd Coelecanth exploration with Iain. He was using his ISC Megaladon electronic rebreather and Iain was using his Inspiration rebreather with the Narced @90 head
After a day of some test dives to 50m, the exploration consisted of 3 deep dives over 3 days:
For the full report, please read the BunakeTec blog about the Coelacanth Dive Expedition – July 2012.
What was also very interesting about Iain’s trip was that it showed the range of diving that this area has to offer for rebreather divers. Before he undertook the expedition, Iain spent 4-5 days doing recreational dives with us around Bunaken, using his rebreather and camera. After the expedition he went to Lembeh and spent another 4-5 days doing recreational dives. Fantastic recreational diving as well as fantastic TEC diving – what other area gives this range of diving opportunities in one dive holiday?
If you want to find our more about TEC or rebreather diving or Coelencanth expeditions, you can email Brendon(at)TwoFishDivers.com.
Sidemount diving is the current craze!! With sidemount, the tanks are mounted on either side of the diver instead of on the back of the diver. It is a popular configuration with advanced cave and techincal divers, as smaller sections of cave and wrecks can be penetrated and tanks can be changed with greater ease.
Its not just for cave and wreck penetration though. As you kit up have you ever thought ‘this hurts my back/ legs’ or ‘geez these are heavy’ or even ‘there has to be a better way’? Sidemount diving is growing in popularity with recreational divers:
The downside? You have 2 SPGs to monitor but this is easy to learn. You also need 2 regs, but isn’t that better than an octopus?
Try-it in Bunaken!
We have just acquired 2 sets of side-mount harnesses and guests are welcome to try a dive with them. If you want to take it further, PADI have just introduced the PADI Sidemount Diver Course and we can offer this course if you want. You need to be an Advanced Open Water Diver with at least 30 logged dives, and on the course you learn sidemount skills in a confined water session and four open water dives. Great fun! Check out this video to find out what its all about.
The current craze in diving is rebreather diving!! With a rebreather, all the air you breath out is captured in the unit on your back and the carbon dioxide is removed, and it is returned to you for breathing again. This means that you do not need as much air, therefore the tanks are only 3liters!
Its not new technology. The “thing” that removes the carbon dioxide is called the scrubber, its just a chemical that reacts with the carbon dioxide and therefore removes it, and was first used in submarines in 1885!
Rebreather diving also offers a different type of diving. During the dives you have to monitor the oxygen content of your air, adding more oxygen to your air if the content gets too low. This is the “technical” aspect with rebreathers, but many rebreathers do this automatically so you just need to make sure that the rebreather unit is doing this properly.
Why do it? Its not about deep diving but about getting up close to the underwater life. When you go diving, the bubbles that you produce scare the fish away, if you produce no bubbles then the fish life will allow you to get closer to them. We can personally verify this with the black tip reef sharks on Rons Point where we had an amazing dive surrouned by 5-10 sharks for ages!
How to get started? As part of becoming a PADI TEC center, we purchased some rebreathers and can offer some try-dives. We will also soon be offering the new PADI rebreather courses aimed at recreational divers:
After this, the next steps are the PADI TEC courses aimed at going on deeper/decompression dives, but thats the subject of another blog!
For more info, keep an eye out on our blog and our website tec diving page.
Yesterday Brendon and Nigel went diving with their brand new Megadolon Rebreather!!
What is a Rebreather?
A rebreather is a type of breathing set that provides a breathing gas containing oxygen and recycled exhaled gas. This recycling reduces the volume of breathing gas used, making a rebreather lighter and more compact than an open-circuit breathing set for the same duration.
There are different types and brands of rebreathers, the one that Brendon and Nigel choose is MEGALODON REBREATHER.
The Megalodon CCR Rebreather is a fine piece of diving machine sporting double heavy-duty o-ring seals on all connections, a heavy-duty aluminum stack where the electronics and Co2 absorbent canister is living in. Individualism is the motto of the day when it comes how to carry the unit ranging from Transpack soft packs to slim or full size stainless steel, aluminum or ABS backplates or even Armadillo sidemount systems. The Automatic Diluent Valve ( ADV ) is a nice safety feature addition during busy events or runaway descents. The Heads Up Display ( HUD ) is a sweet dream to dive with enabling the diver to watch the Po2 at all times, even the busiest ones.
There is a variety of configuations possible with the Megalodon CCR Rebreather depending on personal preferences. The unit is standard back mounted with front mounted cordura counterlungs. The Megalodon CCR Rebreather does not have a standard way of configuration, but can be configured to the divers needs and preferences and to suit the diving environment such as recreational diving, cave diving, technical diving or wreck diving.
SOON SOME PICTURES!!