How about, 3 divers in a river. One swims off into the darkness. The guy in the middle realizes the guy from behind is gone. Diver in the middle and in the back do ascents. Guy in front continues a solo river dive
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Ben_ca:I'm sorry but it seems silly to keep discussing this here... this should be moved outside of the DIR forum.
Rule # 1 applies.
I dive with non-DIR guys to help them see how we do things and be a good mentor. But when I do, do I go to the bunny slopes or black diamond?
Slow, medium and fast diver? Re sequence with slow in front. PF you said it's happened to you multiple times? That's way too many times.
Vayu:How about, 3 divers in a river. One swims off into the darkness. The guy in the middle realizes the guy from behind is gone. Diver in the middle and in the back do ascents. Guy in front continues a solo river dive
PerroneFord:I'd like to present a scenario and get your thoughts on it.
Environment: Overhead. Good flow, sand bottom, consider unsiltable. Penetration distance less than 75 linear ft.
Team: Group of 3 (not team of 3)
Diver 1. Experienced, but not overhead trained
Diver 2. Overhead trained.
Diver 3. Relatively comfortable, not overhead trained.
Depth: ~40ft
Dive time: ~40 minutes
Scenario:
Group of three divers enter an overhead environment. Other divers are already in the overhead but are not with your group of 3. At approximately 40 minutes into the dive, diver 3 begins to exit the overhead as other teams are also leaving the environment. Diver 3 does not signal the group. Diver 2 recognizes that Diver 3 is leaving and attempts to signal Diver 1. Diver 1 is not prepared yet to leave. Diver 2 attempts to halt Diver 3, but Diver 3 is already swimming out and is in a group so can't be signaled.
Question:
As diver 2, what would you do now? Attempt to swim after Diver 3 and abandon Diver 1? Stay with Diver 1 in the overhead and hope that Diver 3 makes the exit and ascent safely? Something else?
And lets not get bogged down in what SHOULD have happened prior to this moment. I'd like to reserve comments to just what we know from this description.
Thanks
PerroneFord:Ordinarily, I'd be right there with you on worst case, but I am describing scenarios I witness regularly at the local holes.
I think as people who subscribe to DIR we know we do things "differently". I think discussions such as this might help non-DIR divers understand both the how and the why in doing it differently. Present a common enough scenario, let it escalate into a minor problem, and then ask how would a DIR diver provide a solution to this problem, and perhaps how would a DIR diver have prevented it in the first place.
I think we are all in agreement that issue 1 is entering the overhead with non-overhead trained divers. Yet, we see it all the time, and in some cases like at Ginnie or Blue Grotto, it is tacitly approved by the landowner.
I believe that a DIR pre-dive briefing SADDDDD or whatever the new Moniker is now, would also address the matters of team order, communication, and when and how to procede when the dive is terminated either on gas or on time. I am not including the dive being thumbed, because that did not occur in the scenario I put forth.
I do most of my diving with non-DIR trained divers. In many cases, they have overhead training from other agencies. I have rarely had a problem with divers trained by ANY overhead agency. I have had numerous problems with divers untrained for overheads. So why dive overheads at all? Great question. I would wager that many of us have done some dives beyond training at some point in our diving careers. I know I penetrated overheads before taking cavern/cave training. I did not violate depth though.
There is a push right now with CCR divers and cavers to establish some protocols for "mixed diving". Meaning dives shared between CCR divers and OC divers. Similarly, I think that we as a DIR or DIR-minded community could establish some ideas for how to have fun and safe dives with either instabuddies, or friends who do not subscribe to DIR thinking. Do we discount making that cave dive with the guy who has an NACD full cave card because he hasn't taken fundies? Do we refuse to do the dive to 100ft with a diver who has 5 years of good experience and an AOW card because he hasn't taken Triox?
Must we only dive with DIR trained divers, or can we dive with anyone.