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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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<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>G=
eorge,<o:p></o:p></span></font></span></p>
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><=
![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/span></p>=
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>M=
y most
common ocean dive is 125 ft for 45 minutes, 2 hour surface, then =
another 45
minutes bottom time.<span style=3D"mso-spacerun: yes"> =
</span>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.<span
style=3D"mso-spacerun: yes"> </span>According to my deco program =
the run
times are basically the same so no extra time in the =
water.<o:p></o:p></span></font></span></p>
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><=
![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/span></p>=
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I=
’d be
interested in your gas choice as well as your =
profile.<o:p></o:p></span></font></span></p>
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><=
![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/span></p>=
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>A=
rt.<o:p></o:p></span></font></span></p>
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><=
![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/span></p>=
<p class=3DMsoNormal><span class=3DEmailStyle15><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><=
![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/span></p>=
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblack
face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> George Irvine
[mailto:girvine@be*.ne*]<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday,
February =
15, 2002
6:53 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
Techdiver@Aquanaut.Com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Standard
Deco =
Dive</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'><![if =
!supportEmptyParas]> <![endif]><o:p></o:p></span></font><
/p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:black'>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. </span></font><font =
color=3Dblack><span
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
color=3Dblack
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:black'> </span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:black'>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.</span></font><font =
color=3Dblack><span
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
color=3Dblack
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:black'> </span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:black'>I can
then run it and also show what happens when it is longer or =
shorter.</span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
color=3Dblack
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:black'> </span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:black'>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.</span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
color=3Dblack
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:black'> </span></font><font
color=3Dblack><span =
style=3D'color:black;mso-color-alt:windowtext'><o:p></o:p></span></f
ont>=
</p>
</div>
</body>
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