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Send reply to: <<trey@ne*.co*>
From: "George Irvine" <<girvine@be*.ne*>
To: <<scuba@md*.co*>, <<trey@ne*.co*>,
<<techdiver@aquanaut.com>
Subject: 220-250 foot diveRE: Andrea Doria Deco Dive
Date sent: Sun, 17 Feb 2002 18:43:24 -0500
<color><param>0000,0000,0000</param>>
> Ted, does this mean you will turn into a huge fat bearded slob with a
> pizza-stained Doria shirt and be participating in a Star Wars Bar Scene on
> the Seeker? I wish the "Doria" would hurry up and disintegrate so the
> strokes could all just lie about it instead of dying about it.
</color>George,
The day I pass 180 lbs. will be the day I sell my deco bottles
and stay above 100'! This will be my fifth year of diving the Doria on
the Seeker; every year I get a T shirt, but Domino's keeps screwing
up the pizza delivery! What's up with that? The wreck is rapidly
falling apart. The next big hurricane that goes up the New England
coast is going to turn it into a scrap pile.
See notes below
<color><param>0000,0000,0000</param>>
> Here is what I would do for deco. I am not doing anything different
> because of the cold - you took care of that by keeping the bottom time
> reasonable. I am assuming that anyone who dives in the 40's uses C-4 , a
> proper WKPP type hood and gloves , and argon.
</color>Last year's dives based on Deco Planner had me hanging 78
minutes from 175' to the surface. This was down from 90 minutes
the year before based on DPA. At 6' tall and 160 lbs., it doesn't
matter how much thinsulite and Argon I have, after 78 minutes of
hanging in the 50's, I still get cccoooold!
<color><param>0000,0000,0000</param>>
> << 23 bottom time
> count all time as if at 240
> your gas or anything close to that
> deck to 150 - 2 min
> 140-80 5 min
I assume the above is 1 minute every 10' from 180' through the 80'
</color>stop on back gas?
<color><param>0000,0000,0000</param>> 70 - 3
</color>Does 3 minutes reflect the 2 minutes it takes for the body to adjust
from back gas to 50% or should this read 70 - 5 ?
<color><param>0000,0000,0000</param>> 60 - 3
> 50 - 3
> 40 - 5
> 30 - 8
> 20 - 15
</color>Does 15 minutes reflect the 2 minutes it takes for the body to
adjust
from 50% to O2, or should this read 20 - 17, or is no adjustment time
required?
<color><param>0000,0000,0000</param>> 5 minutes going to the surface
from 20
>
> Same for the next dive
>
> This schedule will work up to about 25 minutes at the bottom.
>
> On the last two days of diving, switch to the 50% at 60' instead of 70'
</color>Still only 3 minutes at 70' if I'm doing it on back gas?
<color><param>0000,0000,0000</param>> and do your oxygen at 18 feet or
above, maybe splitting it into 18,15,12,9
> or something like that.
</color>Hanging above 15' can get rough due to wave heights. Total time on
O2 is still the same if you split it between 18, 15, 12?
<color><param>0000,0000,0000</param>>
> Your risk in this is exposure and depletion of brain chemistry.
</color>Brain depletion?..........I need what little I have left! Damn, all
I used
to worry about was hypothermia and the bends!
> Don't
<color><param>0000,0000,0000</param>> party with the mutants and take
some vitamin E each day. If you go on the
> Seeker, take some pictures so we can all have a good laugh.
>
</color>Last questions:
Assuming I'm a pessimist (read optimist with experience), who is
not quite ready to go from a 78 minute to a 49 minute accent time
(37% reduction) in one <bold>Very Large</bold> leap of faith, would this
schedule work for bottom times of 16, 19, and 22 minutes without
modification?
If I'm running late (read shit happens) and the bottom time goes as
high as 30 minutes, how much does that change the schedule?
<nofill>
Ted Green
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dive Charter Boat: O.C. Diver
Sunset Marina in Ocean City, Maryland
http://www.ocdiver.com
410.742.1992 800.637.2102
Fax 410.749.9410
"Diving the Atlantic coast from Cape May NJ to Cape Charles VA."
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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