Nitrox for shallow water artifact diving??

[AfterDark]

I doubt the 30 seconds I spent at that extra two feet of depth changed my situation, but if you've put a hard line at 33 feet, then ok.

No exercise during the surface interval.

That was tongue in cheek, your situation is unusual however, if I had a dollar for every time I did dives like you had issues with I'd be living by the ocean! I really do hope you get a resolution.

 

[AfterDark]

Oooh. I thought that too...

Now about my dive yesterday. On a boat in the English Channel diving on a small wreck (Frogner) with a mere 6 people on the boat (hich takes 12, so loads of space. Opposite me are a couple diving mixed systems (him a Kiss, her a twinset/doubles). Dangling in front of me was a roll of gaffa tape (duct tape?) where she'd written her dive plan with a reserve plan. She tore off the tape and stuck it to her drysuit. Without blinking she told me there was a backup on her wetnotes.

She likes to dive like that and that's so nice to see someone sticking to the tried and trusted method. Also she pointed out that the Suunto Gecko was in gauge mode and she didn't have an expensive dive computer. Great answer.

But like dragging rock over plastic to get music; was fine some time ago, but I'll stick with my 8-track iPhone. Much easier to look at the dive time and TTS and leave the computers to work out the deco plan.

Same thing I do when I do deep dives, even though I carry 2 PDCs with me.

 

[Mr. Manfrenjensenden]

That was tongue in cheek, your situation is unusual however, if I had I dollar for every time I did dives like you had issues with I'd be living by the ocean! I really do hope you get a resolution.

Thanks. Me too.

 

[Subcooled]

Unlikely the OP it going spend 3 days on one dive looking for artifacts.

 

[Akimbo]

For anyone who wants to geek-out on long duration shallow air dives:

Direct ascent from air and N2-O2 saturation dives in humans: DCS risk and evidence of a threshold

 

[Subcooled]

Unlikely the OP it going spend 3 days on one dive looking for artifacts.

Hope not, giving his tank size

 

[Subcooled]

Never had any instruction on tables? That's OK. Nobody uses them much anymore.

Oh, dear Boulderjohn, that is SO true and SO untrue.

Well, you do know this poop, and I know why you placed your words that way. Almost nobody... except for... somebody.

I am quite sure that no recreational divers plan their dives (using either tables or computers),
but when I am about to perform a simple overhead dive, with no possibility to resurface mid-dive,
I DO PLAN my dives using tables (or MultiDeco, I 100% love that, I paid for it, and I am happy).

Tables let us plan things on site without using computers. Tables are a wonderfull thing!

 

[boulderjohn]

Oh, dear Boulderjohn, that is SO true and SO untrue.

I am quite sure that no recreational divers plan their dives (using either tables or computers),
but when I am about to perform an overahead dive, with no possibility to resurface mid-dive,
I DO PLAN my dives using tables (or MultiDeco, I 100% love that, paid for it, and happy).
Tables let us plan things.

You do realize, don't you, that the topic of this discussion was very shallow, recreational, non-technical, non-cave dives?

You do realize, don't you, that the tables we are talking about are the standard ones usually found on a single laminated card, not a complex one using computer software?

 

[Subcooled]

You do realize, don;t you, that the topic of this discussion was very shallow, recreational, non-technical, non-cave dives?

Oh, you are right! My bad.
Sometimes I only look at the letters, omitting the sentence.

(edited: ps. I wrote that you know this **** and I also explained that various scenarios do exist. Discussions do evolve.)

 

[AfterDark]

For anyone who wants to geek-out on long duration shallow air dives:
Direct ascent from air and N2-O2 saturation dives in humans: DCS risk and evidence of a threshold

"For example, the manual allows a diver to make a no-stop ascent after exposure to 25 fswg for less than 10 hours, before he is saturated, but there is no information on the risk if the diver is saturated at 25 fswg and is forced to make a direct ascent".

There ya go OP keep it under 10hours!