Chris Demetriou, TDI APD CCR Instructor
Trainer at Dive-In Larnaca firmly believes that rebreather diving is “the way
to go”.
Chris has amassed thousands of hours on his
units, starting off on a Draegar Dolphin in the late 90s he moved to the APD
units in 2002 and has never looked back. He has also dived on Submatix, KISS
and Poseidon units but has had at least one APD unit throughout. He is now the
APD dealer for Cyprus.
Rebreathers are
silent
For Chris, diving is about wrecks, but
traditionally with each exhaled breath Open Circuit divers release a large
burst of noisy bubbles. The effect of this can dislodge rust and silt in a
wreck, losing a great photo opportunity, a no bubble rebreather dive reduces the
effect significantly. Giving you longer to admire and explore the fascinating
world of sunken ships.
For those whose interest is more with the
living things in the water then rebreathers really come into their own –
especially if photography is your thing. Rebreathers allow you to get up close
and personal with even the smallest sea creatures without a cloud of bubbles
sending them darting away.
Rebreather diving is
warmer
The gas breathed on Open Circuit is cold due
to pressure reduction before you inhale. On a rebreather you are breathing
oxygen replenished exhaled air, so the gas is warm rather than cold. Meaning on
an average dive you will be warmer diving on a rebreather than on Open Circuit
– can't be bad!
Rebreathers are gas
efficient
The most significant advantage that
rebreathers offer is greatly increased gas efficiency, which means lower gas
costs – especially when you reach the mixed gas (Trimix level). To be able to
do a dive and not be limited by gas supply is brilliant. The two hour dives we
have done around the Zenobia followed by a swim to the Alexandria prove that
rebreathers win hands down for gas costs.
Rebreathers deliver
the ideal gas
A rebreather ensures you are breathing the
best gas mix for depth you are at, at all times during the dive. That means
that even on long dives you could end up with significantly less decompression
time than your Open Circuit buddies
Rebreathers are
great for exploration dives
With the APD Evolution+ and Inspiration you
can get a 3 hour bottom time from the scrubber, which makes it ideal for
exploration diving and can make for shorter surface intervals. Which means you
spend more of you day diving and less on the surface off-gassing.
Maintaining Rebreathers
It does take longer to setup a rebreather
and to thoroughly clean it after a dive, but this time is not significant and
with practice can soon be done in the same time as setting up an Open Circuit
rig. And any increase in set up time is far outweighed by the increase time you
can spend on the dives.
Chris is passionate about CCR diving
and willingly shares his knowledge and experience with his students and fellow
CCR divers. All the staff at Dive-In Larnaca are CCR divers (even the admin
staff).
Dive-In Larnaca offers TDI Rebreather (CCR) courses on
APD units from Air Diluent (30m depth limit) to TDI Adv Mixed Gas courses at
100m and TDI APD Rebreather Instructor courses to Mixed Gas level. We also offer guided CCR dives on the wreck of the Zenobia. For more
information see our website www.dive-in.com.cy or email Chris or
Sheri at larnaca@dive-in.com.cy and let the silent
dives begin.
I am also into using rebreather when diving rather than using other equipment. Other diving equipment is a bit noisy and annoying for the underwater creature.Once you've disturb them, you will be reluctant to dive in deeply. That's why, I love to use rebreather because it can not disturb underwater creature and you can dive free.
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