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<div class="moz-cite-prefix">On 14/10/2015 16:28, Willem Ferguson
wrote:<br>
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<blockquote cite="mid:561E667A.3070508@zoology.up.ac.za" type="cite">
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<div class="moz-cite-prefix">On 14/10/2015 16:05, Robert Helling
wrote:<br>
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<blockquote
cite="mid:02E48E3C-98F5-4F7C-9DB8-5406AE43BBB3@atdotde.de"
type="cite">
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Hi,
<div class=""><br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 14.10.2015, at 15:26, Willem Ferguson
<<a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:willemferguson@zoology.up.ac.za">willemferguson@zoology.up.ac.za</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class=""><span style="font-family: Menlo-Regular;
font-size: 11px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; float: none; display:
inline !important;" class="">This is the gas pressure
in the cylinder at the start of the ascent</span><br
style="font-family: Menlo-Regular; font-size: 11px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px;" class="">
<span style="font-family: Menlo-Regular; font-size:
11px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; float: none; display:
inline !important;" class="">phase? This is a
meaningful request but would require another selection</span><br
style="font-family: Menlo-Regular; font-size: 11px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px;" class="">
<span style="font-family: Menlo-Regular; font-size:
11px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; float: none; display:
inline !important;" class="">to be made in the planner
(gas turn rule). This is something that I use</span><br
style="font-family: Menlo-Regular; font-size: 11px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px;" class="">
<span style="font-family: Menlo-Regular; font-size:
11px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; float: none; display:
inline !important;" class="">all the time in dive
planning.</span></div>
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what would that mean for the planner? Except for recreational
mode, the planner always starts the ascent at the end of the
manually entered waypoints. Would you want to say something
like “go to 80m and then figure out the pressure at which you
have to leave 80m so you and your buddy make it to the surface
with x bars remaining”?</div>
<div class=""><br class="">
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<div class="">Best</div>
<div class="">Robert<br class="">
<div apple-content-edited="true" class="">
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<div style="color: rgb(0, 0, 0); font-family: Menlo;
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<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent:
0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px;
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<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal;
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line-height: normal; orphans: 2; text-align:
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none; white-space: normal; widows: 2; word-spacing:
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break-word; -webkit-nbsp-mode: space;
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class="">
-- <br>
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</blockquote>
Robert,<br>
<br>
Correct. <br>
<br>
Of course, actually, I commonly dive 230 bar and start the ascent
at around 90-95 bar, using thirds. So the 77 bars accurately
constituting a third is really a bare minimum and it is affected
by deco obligations. But a message indicating "Ascent back gas
pressure = 90 bar, i.e. within rule-of-thirds pressure (77 bar)"
would be helpful. It is an additional bit of safety information
that checks the accuracy of the deep section of the overall dive
planning outside of Subsurface. Does this make any sense?<br>
</blockquote>
Of course you can see Ferguson' muddled mind here. In a strict
thirds approach turning would be at around 140 bars in a cave.
Reason for every bit of additional safety information from the
planner. Fortunately I do not put my foot in a cave, otherwise I
might consider turning at 90 bar!<br>
<br>
<blockquote cite="mid:561E667A.3070508@zoology.up.ac.za" type="cite">
Kind regards,<br>
willem<br>
<br>
<br>
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