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Art.first of all, there is no "comparison" of a 125 air dive to anything
from a decompression standpoint since there is no deco that works for that.
Forget "air tables" - they are nonsense, as are nitrox "air equivalent"
tables. Drop those concepts from your mind. Secondly, use 30% helium or
greater - the lower percentages don't do the job. Next, leave the oxygen out
of the first dive and take it on the second.
Both dives have the same deco times, only use the oxygen from 20 feet on the
second dive . Use the ascent from depth and the final surfacing protocol
already outlined before.
from bottom to 70 - 3 minutes
From 70 - switch and spend 3 minutes.
60 2
50 2
40 3
30 5
20 8
To surface - 3 more minutes
If you want to add time, do it from 20 to the surface.
-----Original Message-----
From: Art.Paltz@R2*.CO* [mailto:Art.Paltz@R2*.CO*]
Sent: Saturday, February 16, 2002 7:55 AM
To: trey@ne*.co*; techdiver@aquanaut.com
Subject: RE: Standard Deco Dive
George,
My most common ocean dive is 125 ft for 45 minutes, 2 hour surface, then
another 45 minutes bottom time. Previously I was using AIR for bottom gas
and O2 for deco but this year I think I�m switching to a bottom mix of 21/25
(O2/He) then 50/50 and O2 for deco. According to my deco program the run
times are basically the same so no extra time in the water.
I�d be interested in your gas choice as well as your profile.
Art.
-----Original Message-----
From: George Irvine [mailto:girvine@be*.ne*]
Sent: Friday, February 15, 2002 6:53 AM
To: Techdiver@Aquanaut.Com
Subject: Standard Deco Dive
What is the most common dive you guys are doing that we can start with as
an example? Give me the depth and time at the bottom.
It is a lot easier to do the longer times due to the use of more gasses,
but I am suspicious that nobody but us does that, and you would be an idiot
to do it in the open ocean as opposed to a cave.
I can then run it and also show what happens when it is longer or shorter.
I personally think of dives as 100 ft, 150, 200, 250 or 300, and I use gas
for 1,2 or 3. The deco gas choice is dependent on the bottom time. While the
gases are standard, whether you use them all or not is operational and time
dependent. Below 100 is a special case, and beyond 350 is a special case.
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<DIV><SPAN class=3D698015422-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Art.first of all, there is no "comparison" of a 125 air dive to =
anything=20
from a decompression standpoint since there is no deco that works for =
that.=20
Forget "air tables" - they are nonsense, as are nitrox "air equivalent" =
tables.=20
Drop those concepts from your mind. Secondly, use 30% helium or greater =
- the=20
lower percentages don't do the job. Next, leave the oxygen out of the =
first dive=20
and take it on the second.</FONT></SPAN></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002></SPAN></FONT></FONT></FONT> </DI
V>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>Both dives have the same deco times, only use =
the=20
oxygen from 20 feet on the second dive . Use the ascent from depth =
and the=20
final surfacing protocol already outlined=20
before.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002></SPAN></FONT></FONT></FONT> </DI
V>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>from bottom to 70 - 3=20
minutes</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>From 70 - switch and spend 3=20
minutes.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>60 =20
2</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>50 =20
2</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>40 =20
3</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>30 =20
5</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>20 =20
8</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>To surface - 3 more=20
minutes</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002></SPAN></FONT></FONT></FONT> </DI
V>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002>If you want to add time, do it from 20 to the =
surface.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT
color=3D#0000ff><SPAN=20
class=3D698015422-17022002> </SPAN></FONT></FONT></FONT></DI
V>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B>
Art.Paltz@R2*.CO*=20
[mailto:Art.Paltz@R2*.CO*]<BR><B>Sent:</B> Saturday, February 16,
2002 =
7:55=20
AM<BR><B>To:</B> trey@ne*.co*; =
techdiver@aquanaut.com<BR><B>Subject:</B>=20
RE: Standard Deco Dive<BR><BR></FONT></DIV>
<DIV class=3DSection1>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt">George,<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt">My=20
most common ocean dive is 125 ft for 45 minutes, 2 hour surface, then =
another=20
45 minutes bottom time.<SPAN style=3D"mso-spacerun: yes"> =20
</SPAN>Previously I was using AIR for bottom gas and O2 for deco but =
this year=20
I think I’m switching to a bottom mix of 21/25 (O2/He) then =
50/50 and O2 for=20
deco.<SPAN style=3D"mso-spacerun: yes"> </SPAN>According to my =
deco=20
program the run times are basically the same so no extra time in the=20
water.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt">I’d be=20
interested in your gas choice as well as your=20
profile.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt">Art.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/SPAN></P>
<P class=3DMsoNormal><SPAN class=3DEmailStyle15><FONT face=3DArial =
color=3Dnavy=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
12.0pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DTahoma =
color=3Dblack=20
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
Tahoma">-----Original=20
Message-----<BR><B><SPAN style=3D"FONT-WEIGHT:
bold">From:</SPAN></B> =
George=20
Irvine [mailto:girvine@be*.ne*]<BR><B><SPAN=20
style=3D"FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, February 15, 2002 =
6:53=20
AM<BR><B><SPAN style=3D"FONT-WEIGHT: bold">To:</SPAN></B>=20
Techdiver@Aquanaut.Com<BR><B><SPAN=20
style=3D"FONT-WEIGHT: bold">Subject:</SPAN></B> Standard Deco=20
Dive</SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt"><![if =
!supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT><
/P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
color=3Dblack=20
size=3D2><SPAN style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
Arial">What is=20
the most common dive you guys are doing that we can start with as an =
example?=20
Give me the depth and time at the bottom. </SPAN></FONT><FONT=20
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
color=3Dblack size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT=20
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
color=3Dblack=20
size=3D2><SPAN style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
Arial">It is a=20
lot easier to do the longer times due to the use of more gasses, but I =
am=20
suspicious that nobody but us does that, and you would be an idiot to =
do it in=20
the open ocean as opposed to a cave.</SPAN></FONT><FONT =
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
color=3Dblack size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT=20
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
color=3Dblack=20
size=3D2><SPAN style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
Arial">I can=20
then run it and also show what happens when it is longer or=20
shorter.</SPAN></FONT><FONT color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
color=3Dblack size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT=20
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3DArial =
color=3Dblack=20
size=3D2><SPAN style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
Arial">I=20
personally think of dives as 100 ft, 150, 200, 250 or 300, and I use =
gas for=20
1,2 or 3. The deco gas choice is dependent on the bottom time. While =
the gases=20
are standard, whether you use them all or not is operational and time=20
dependent. Below 100 is a special case, and beyond 350 is a special=20
case.</SPAN></FONT><FONT color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><FONT face=3D"Times =
New Roman"=20
color=3Dblack size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT=20
color=3Dblack><SPAN=20
style=3D"COLOR: black; mso-color-alt: =
windowtext"><o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE
></BODY></HTML=
>
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