P3

[bpcfire1]

Anyone dove P3 lately??

[whodunit68]

I heard as of this past weekend it's anywhere from 30-50' of viz....back to the regulations discussion....what's the gig on syphons at Intro?

[hunabku]

No limitations on syphons that I know of.

[Paulmal]

I was under the impression that you could not dive siphons till you get "full cave".

[hunabku]

I was under the impression that you could not dive siphons till you get "full cave".

I have sited the limitations as stated in the NSS-CDS and NACD workbooks before. I don't have my books with me right now to do it again. There are no limitations prohibiting diving syphons. Different agencies may vary.

If you can site something otherwise I would be interested to learn from it.

As an example, downstream cow is open to cavern through full.

[whodunit68]

I can't cite it as I don't have the workbooks but I remember some discussion/confusion around this. This is why I wanted to clear it up.

[aquadog196]

Expect the sand slide "restriction" at about 850' on the main line to be more of a restriction...squeezing through on the right and
up.

[hunabku]

Back home now. No limitations against syphons for cavern through cave in either NSS/CDS rev 04/06 or NACD 2009 edition.

I could site all of the limitations but there aren't any about syphons, so why bother.

The books do mention that there are additional dangers associated with syphons, and that normal gas planning rules may not be conservitive enough. I agree.

[whodunit68]

no need to cite them if there's nothing - it clears it up. Thanks for checking.
Brandon, I will let you know as I'm tentatively going up north this weekend and have P3 tentatively scheduled for Friday.

[TracyN]

Prior to Full Cave I had NAUI Cave 1. I specifically remember from training that we were not allowed to dive siphons. I can't speak for the NSS or CDS but I imagine the training standards would be similar. I dove P3 last week to Hendly's Castle with Paul for my last dive. The passage was very milky and the silt will poof up if you look at it wrong. In a few places we had to remove the main line from the silt because it was buried. If you are only intro and don't have good buoyancy control I would highly suggest doing a different dive.