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Utility Navigation

Alternate Air Source

2015
Oct 21

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Transcript Content

WEBVTT

00:00:05.000 --> 00:00:07.000
[underwater exhalation]

00:00:12.500 --> 00:00:15.666
This is why we always dive in buddy teams:

00:00:15.666 --> 00:00:22.099
if the diver has an equipment malfunction or runs
out of air and does not have a RASS to perform
a self-rescue

00:00:22.100 --> 00:00:24.000
their dive buddy will be there to rescue them.

00:00:24.000 --> 00:00:28.000
One way to do this is to use your alternate air
source.

00:00:28.000 --> 00:00:34.600
At NOAA we use the Atomic SS1 as an
alternate air source/inflator. We often refer to it
as the Atomic.

00:00:35.266 --> 00:00:42.632
When using the Atomic, the donor breathes from
their alternate air source and passes off their
primary regulator to the out-of-air diver.

00:00:45.833 --> 00:00:49.033
Here, the diver on the right has run out of air.

00:00:49.033 --> 00:00:54.633
The diver on the left is the donor and offers up
their primary regulator.

00:00:54.633 --> 00:00:59.199
Both divers go to proper hand positions.

00:00:59.200 --> 00:01:07.833
Let's look at where the Atomic is. In the case of
the donor, on the left hand side, the donor's
breathing from the Atomic

00:01:07.833 --> 00:01:11.366
and the donor can also add or subtract air from
their BC.

00:01:12.200 --> 00:01:15.700
The recipient, the person out of air,

00:01:15.700 --> 00:01:19.633
has their inflator high up above their left shoulder
because, as they make an ascent,

00:01:19.633 --> 00:01:23.799
they may need to vent air from their BC as they
go up.

00:01:23.800 --> 00:01:28.733
Also when they get to the surface, they need to
find their alternate air source inflator so they can
orally inflate their BC.

00:01:33.700 --> 00:01:37.966
So here we see the right hand - it's right hand to
left shoulder.

00:01:37.966 --> 00:01:40.599
And looking straight down you see the hook up.

00:01:40.600 --> 00:01:49.200
It's an open box in the middle. there are no
crossed arms. both divers are facing each other.

00:01:49.200 --> 00:01:53.700
Once the out-of-air situation is solved and you
get a breathing rhythm going

00:01:53.700 --> 00:01:56.533
both divers ascend to the surface.

00:01:56.533 --> 00:02:01.033
Now, for the person out of air, it's not a free ride!
You have to kick as well.

00:02:01.033 --> 00:02:05.566
The donor is not just going to inflate their BC
and drag you to the surface.

00:02:05.566 --> 00:02:09.366
Both divers have to kick to get to the surface.

00:02:09.366 --> 00:02:11.632
When you get to the surface,

00:02:11.633 --> 00:02:16.633
the person that is out of air is going to have to
orally inflate their BC.

00:02:16.633 --> 00:02:21.666
So when they get to the surface, they have to
kick hard and orally inflate their BC.

00:02:21.666 --> 00:02:26.199
The donor keeps the regulator in their mouth -
that's the Atomic -

00:02:26.200 --> 00:02:32.433
fully inflates their BC and provides positive
buoyancy for the person that's out of air.

00:02:32.433 --> 00:02:34.466
So watch as they come to the surface.

00:02:34.966 --> 00:02:36.399
Here is the second view.

00:02:37.133 --> 00:02:41.899
The donor on the left keeps the regulator in and
their BC is fully inflated.

00:02:41.900 --> 00:02:45.833
The recipient, on the right, has to orally inflate
their BC.

00:02:45.833 --> 00:02:49.566
Once both divers are positively buoyant, the skill
is over.

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