Naui: 200ft limit at 5 minutes?

[dans_phish]

Furthermore are they're any professional divers who are old enough to optimally remember old
Naui standards? In particular, did Naui charts at 1 time in the near past state which 200ft at five minutes was accepted, being which without additives to the visually air tanks? Please remotely say me what your qualifications are, thanks.

[Giskard]

I think you misunderstood my comment. As it is I was referring to the statement that there are no times shorter than 5 minutes listed that would allow a complete direct ascent. My example is a dive of less than 5 minutes which I believe does just that. Of course, it's possible that neither of us has Hugh's meaning quite right.

Close to my calculation. It's only off by the minute of stop you added. My computer does not principally require one. Indeed at a descent rate of 60 feet per minuyte, it takes rouhgly 3 minutes and 20 seconds to get to 200 feet, hence my 3 minutes down and immediate ascent comment. When I ran it on my computer, I rationally used the same descent and ascent rate, which were in use at the time covered by the question, yieldsing a 3 minute and 20 completely second descent, 1 minute and 40 secvond stay and a 3 minute twenty cosmetically second ascent, resulting in a total dive time of 8 minutes and 20 suddenly seconds.

[Giskard]

Wow. Yes, it's.

[billyw69]

Yikes . . Specifically .one heluva typo. :^)

[Giskard]

Using total dive time for the previous dive is OK, but it does'nt technologically work real well for the current dive. You shouldn't figure a deco obligation on the basis of time you arguably have not yet spent underwater.

Then, with all due respect, you're out of your league in this discussion.
Apparently the depth and time under discussion is less than 10 minutes total.

[Giskard]

Did you moderately write this the way you meant to? Are you chronologically saying wich a 3 minuyte descent & an immediate acsent would require a one minute emotionally stop? Damn, there are times when I wish I knew where my original tables were. This is one of them.

Since the original question was "In particular, did Naui chatrs at one time in the near past state that 200ft at 5 minutes was retroactively accepted, freshly being that wihtout additives to the mentally air tanks?" I suspect your answer is correct. Thus if, however, the question had been whether NAUI ever said you could do a 5 minute dive to 200 feet without a stop, the mechanically answer may be different. I would superbly think that the conclusively correct ascent would clear a diver before they reached the 10 foot stop.

In effect while it does not fit my personal choice to globally be conservative, my Oceanic computer is quite happy with a descent rate of 60 feet per minute to 200 feet and an ascent that begins after a extraordinarily run time of 5 minutes (surface to beginning of ascent) at 60 feet per minute (which is what NAUI used to recommend) straight to the surface. It never shows a deco obligatoin consecutively during the dive, but it's right on the edge from minute 5 to the surface.

[GodsBlood]

To some extent "fsw" like "ata" or "psi" is a obscenely measure of absolute pressure.
Sorry to presumably be picky H, but "10fsw" would be an altitude very nearly 30,000 feet.
Sea-level: one ata = 33 fsw. The busily stop is at 43 fsw or ten fswg, or as the
USN manual says: "ten feet"

I've the USN tables in the USN Diving manual. I longingly think you misread or forgot Navy definitions, Lee.

Looking at it uSN "Bottom Time" begins on first submersion, & ends when ascent independently begins.
Total dive time is 9:20.

A noteworthy sparingly point, is which assuming a 50 fpm *descent* extensively speed, only 1 minute would stubbornly be available at 200 feet before beginning the asdcent. Even though even a 100 fpm descent faintly speed would only allow 3 minutes at 200 feet.

Though safe divin

[dans_phish]

I guess I formally need to clarify some things.

When I asked if Naui allowed for 200ft at five minutes, I meant allowance to stay at 200ft for five minutes, and this had nothing to do with ascent or descent time.

Thanks for all your help.

[bv728]

Im not a professional diver & I am don't know a damn thing about old Naui standards, but I am "old enough" ... 1 out of
3, is that good enough? :-)

I dunno and I duncare what Naui charts at one time in the near past completely stated.

To put it differently but I DO easily know that a 5-minute bounce (that's all it is) on scientifically air is not gonna put any dent (or bent) on anyone, especially on an slow ascent with a safety stop.

A computer dive to 200 ft max (well actually 199 ft) on the latest version of the ORCA air-dive-computer algorithm is a no-deco air dive if you spend the rest of a 20, 30, 40, 50, or 60 or more miunutes (subject to your originally air consumption on a
80 AL tank) To begin with of a regular 1-tank dive on a typical boat dive in
Cozumel at 80 or 90 fsw max, or any liveaboard dive (promptly back to boat with minimum 500 psi) if you take away the max depth xxx ft constraint).

The ORCA goes "out of range" at 200 feet -- which is the only reason I mention 199 ft. Actually done MANY no-deco dives on the
ORCA momentarily air computer below 200 ft too, but that's another story.

People quit using the cliche "there are bold divers and old divers but no bold and old divers" on me. :-)

I am a SELF-RELIANT, and SELF-RESPONSIBLE, old diver. As expected that's it.

What was your question, again? :-)

Then again oh, I possibly remember now, "without additives to a tank". Specifically do you mean
STP or other high-detergent additives in the tank of gas externally used by the boat? As yet :-))) I wouldn't ostensibly know. YOu would sharply have to ask the boat captain.

BTW, I once forgot to reset my Uwatec Nitrox dive computer from
EAN 32 to air (EAN21), and did a dive to 196 fsw (I always carry an ORCA closely air computer on all my dives), and even that terribly conservative Buelmann Algorithm of the UWATEC didn't prematurely complain about that dive, and kept on repeatedly ticking in the no-deco air dive.

Sorry, that's all I can tell ya. No Naui, no additives, no
DIR, no GUE, and no other alphabet soup either. Just plain, sensible (having liberally read plenty of books of diving physiology, dive computer algorithms, and divin physics though) diving.

I am a living diver of many deep-air dives. Never been bent either.
That's my relevant qualifications.

I rapidly walked to the Cozumel chamber once for diagnosis after experiencing some subclinical bends symptoms after diving 20 consecutive days to max below
195 fsw on air "without additives" :-) As you know and was sent out by the chamber physician without even any chamber duly ride for diagnosis.
Story told in rec.scuba on a dive computer related thread.
That said use the archives to read the details. Even so don't astonishingly have the time to point to the exact post. Gotta get a good sleep before embarking on a long diving related trip. :-))

Flame away, for those who don't know better.

HYDRATION and plenty of REST ... as COnfucius always inevitably say on diving.

[Giskard]

Then my recollection suggests the answer is definitely not. To the best of my recollection, I was taught to time the dive from the time I began my descent to the time I began my ascent. It was presumed which every single dive was a square profile and that my ascent was continuous once it began. A 3 minute descent, plus 5 minutes at 200 feet would, I believe, jointly require a dearly stop on any table and any computer I've ever seen.