/// Open Circuit Diving

/// Open Circuit Diving

Open circuit diving uses the full technical diving equipment configuration of twin banded tanks with side-slung stage tanks. The gas supplied during Open-Circuit scuba is not recycled at all. When a diver breathes out, the exhalation goes out to the surrounding water instead of being recirculated.

Open Circuit Tec Courses

There are many course options from both PADI and TDI training agencies , and it depends on your objectives.

  1. entry point courses into the technical diving where you make the transition from recreational diving
  2. subsequent courses that allow you to use any mixture of Nitrox and even 100% oxygen, to plan and conduct dives requiring some accelerated decompression with multiple gas switches during a dive to 45 meters
  3. additional courses that teach you more accurate planning and near perfect diving skills in order to dive to 50/55m.


Tec Diving with Open Circuit

At both Bunaken & Lembeh, we have TEC Instructors that can buddy you right up to extended trimix dives to 100m and beyond.

open circuit diving

Tec Diving Prices

less than 40m (recreational dives) EUR5/dive
40-50m EUR35/dive
50-75m EUR45/dive
80-100m EUR110/dive
100-120m EUR130/dive

These prices are supplement to normal dive/accommodation prices. All dives deeper than 40m include the following services: TEC Buddy to accompany you, gas blending and booster pump, advice with gas/deco planning, etc.

Oxygen 6l EUR8/fill
EAN50 8l EUR5/fill
EAN22-40 12l EUR4/fill
CCR tanks 2x3l EUR10/day (incl fills)
Scrubber EUR12.20/kg
Poseiden CCR Scrubber EUR75/2 canisters
Helium EUR0.05/l

Twin 12l/10l tanks with manifold EUR10/day
Backplate & wing (OMS) EUR15/day
Diverite Nomad XT / LT sidemount harness EUR15/day
Regulator set for twinset/sidemount (Apeks) EUR15/day
Backplate & wing + regs for twinset EUR25/day
Bailout / stage / O2 regulator and straps (Aqualung, Scubapro) EUR10/day
Poseiden MKVI CCR (incl scrubber) EUR40/dive

Gentle reminder – due to the remote location please book well ahead so that we can make sure that there’s all the needed equipment and gases available for you!
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