air sharing

[jeffyjak]

I just finished the "dir fundamentals" book, & have a question (well, many, but one for now)
If I understand correctly, the primary hose is configured such that it ends up going behind the divers neck on right side of face.
In viewing a short video from fifth d, I don't see that that configuration is being used..

http://fifthd.com/classinfo/video/ooa.htm
(see the very beginning of this vid)

If done as I think I read in the book, the donor would have to bring the hose "over & around his head" to hand off to the needer...

can anybody describe to me how it's done? or if I'm missing something?
thanks in advance,
Jeff

 

[daylight]

JeffyJaj,
First off, welcome to the board. Yeah you have it figured out. I'm sure you were just viewing the video from a bad angle.
The DIR guys love to drone on endlessly about this so they should be along shortly. Don't over think it, and just follow directions. Before you know it you'll be a newly minted DIR Dude.
Dive Safe,
Larry

 

[cornfed]

It's kind of hard to see in that video because the donor out of the frame but it really isn't a big movement. You do have to "unwrap" it but isn't very hard.

Cornfed

 

[diverbrian]

While I am not DIR., I do dive with my regs in that configuration quite frequently. It is very common for divers when using doubles. It is far easier than it looks to hand off the primary for air sharing. It basically involves ducking the head and "shrugging" off the loop of the long hose around your neck. The really neat part is that the secondary is just under neck and you barely need to think about it to get it into your mouth.

Safe diving!

 

[Charlie99]

Just don't try it while wearing a snorkel

 

[DIR Tec Diver]

Hello,

Dip your head, grab the hose next to the second stage, extend your right arm forward placing the mouthpiece to the OOA diver. Go to your Backup
Once the OOA diver has the reg, you follow the hose down pull it from under the light canister, bring the hose up along the side of the wing, and then tug it firmly from over your right shoulder to ensure that it is all the way deployed.

All of this should be done in a horizontal postion, in trim and with good buoyancy.

Now you unclip your SPG and show it to the OOA diver. Upon determining the air pressure you decide if you go to the upline (if applicable), exit the overhead, or make an immediate ascent. You point to the direction of the exit by using your hand in the shape of a gun. If your buddy points his gun in the opposite direction, then the guns go away and all that is left is the thumbs up - Immediate ascent.

If you are escorting the diver from the right hand side, then the OOA diver will make a loop with the extra hose, so as to not cause any unnecessary drag. If you are escorting the diver from the left hand side, then the extra hose will loop around over the top of his (or her) head and the OOA diver will ensure that it is kept neat and streamlined.

You always have the OOA diver in front, you hold the arm behind the elbow and use touch contact to move. Two pushes forward means - straight ahead. 2 tight squeezes means stop, 2 tug backwards means you guessed it. Back up.

One tip, if you are diving with the canister light, you will need to pass off the light head after the donation and loop it back around the hose to allow you to fully deploy the long hose. Also the OOA diver should clip off his primary to ensure proper streamlining and trim.

When you go back to your primary (lets say you just did the drill with your buddy, you will need to pass the light head back through the long hose to put the light head and cord back in the proper position.

I hope this helps out.

David

 

[Big-t-2538]

That isn't the best video to see what is happeneing.....as a matter of fact the actual donation of gas isn't even really shown.

The video we saw in the DIR-F class was loads better than that.

Essentially you have to drop your head for a split second and donate the primary as if you were donating it with a standard length hose, but you have to make sure to give the hose a good tug to get it over your head. It is actually really easy once you get used to it. During class I commonly made the mistake of just donating without tucking my head.....the diver got gas, but the drill looked a little (ok a lot) ugly. Day 2 OOA drills went much better.

 

[bwerb]

DIR Tec Diver once bubbled...
Upon determining the air pressure you decide if you go to the upline (if applicable), exit the overhead, or make an immediate ascent. You point to the direction of the exit by using your hand in the shape of a gun. If your buddy points his gun in the opposite direction, then the guns go away and all that is left is the thumbs up - Immediate ascent.

Point of clarification...

The "gun" signal is actually a combination of two hand signals at once. The finger is directional...move this way (to the exit or upline or shore etc.)...the thumb portion is "surface/end dive".

The donor makes the call..."we are exiting this way"...point plus thumb..."and then we will surface". The OOA diver is to return the signal to indicate understanding and compliance (like the OK sign or "hold").

I've just never heard of the "I point one way, you point another"...I'd think that would cause real confusion...the donor controls the situation...he's the one with the gas. If I pointed to the exit and my buddy pointed another way, perhaps it would be best to just surface but it would be because of a lack of a correct response, not the battle of the "guns".

Could you clarify this portion?

 

[Big-t-2538]

bwerb once bubbled...

I've just never heard of the "I point one way, you point another"...I'd think that would cause real confusion...the donor controls the situation...he's the one with the gas.

totally agree...the "gun" is a command signal...nothing is done until it is agreed upon....once the OOA diver has gas, the immediate emergency is over...now it is time to finish up and safely get the team back to the surface....there needs to be zero confusion here.

 

[DIR Tec Diver]

Certainly, this issue came up and was discussed a lot in the DIRF class. Here is the issue.

Yes the donor controls the situaiton, but it is required that the receiver also reciprocate the signal in the same direction acknowledging the appropriate exit plan.

In the event that the receiver is not in total control, nervous, panicked, confused whatever and is not cooperative and wants to go the opposite direction (hence guns pointing towards eachother '- -' then you drop the guns (pull in the fingers) ' ' which makes the decision for itself (immediate ascent)

The last thing that we would want to do is compromise the safety and further degrade the situation by having an out of air situation turn into a cock fight.

That is the idea and discussion that we had in a very short summary.