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<div class="moz-cite-prefix">For completeness also here:<br>
<br>
(sorry for the bottom post). <br>
<br>
--jan<br>
<br>
<br>
On 19-03-17 11:26, Stefan Fuchs wrote:<br>
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<blockquote cite="mid:bb099091-0ed6-886d-ec95-9d4b6cc3440c@gmx.de"
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<p>Hello Jan,<br>
</p>
Am 19.03.2017 um 09:53 schrieb janmulder:<br>
<blockquote
cite="mid:Subsurface-divelog%2Fsubsurface%2Fissues%2F262@github.com"
type="cite">
<p>Ok, I never use the Subsurface planner IRL so I might be
confused how thing are supposed to work. So when working on a
translation of the user manual (to Dutch), I sometimes find
functionality that I just try on the current master.</p>
<p>Intrigued by a sentence in the user manual "<em>Subsurface</em>
will automatically extend the bottom section of the dive to
the maximum duration within the no-decompression limits
(NDL)." from the Recreational dive planner section, I try to
plan a recreational dive following the procedure in the user
manual. I expect to end up with a dive with at least reserve
pressure, with a maximum bottom time without any deco
obligation.</p>
<p>It is unclear to me how to trigger the "automatically extend
the bottom section". It lets me drag the waypoints, sometimes
I see a minor snap to a different value, but, in general, this
does not lead to a bottom phase on NDL. Tried to drag points,
alter the table, but to no avail.</p>
<p>Seems a bug to me.<br>
</p>
</blockquote>
I was in a similar situation a few days ago when I had to decide
how to implement and document the minimum gas calculation for the
planner:<br>
I also had to learn how the recreational mode really works - I
never used it before.<br>
But my result was that after the idea became clear to me and I
double checked a few results by e.g. calculating gas consumption I
felt very happy with the results and started to like the
implementation. So no bug found on my side.<br>
One hint: As soon as you use such tiny small cylinders like 10l
<g> most probably gas consumption and reserve gas will be
the limiting factor.<br>
<br>
BTW: I copied this to the mailing list.<br>
<br>
<br>
Best regards<br>
Stefan<br>
<br>
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<p>Stefan Fuchs<br>
E-Mail: <a moz-do-not-send="true" href="mailto:sfuchs@gmx.de">sfuchs@gmx.de</a></p>
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<br>
<p>Ok, ok. Like I said, never user de planner IRL (and certainly not
in Recreational mode).</p>
<p>As Stefan pointed out on the mailing list ... it takes a little
training to get familiar with use the planner, and indeed, I know
do not see the issue I pointed out here any more.</p>
<p>I understand where I was thinking the wrong way. I had set slow
ascent speeds, and did not really notice the change of scale of
the entire window when changing data of the profile. What is still
counter intuitive for me, is that it is called recreational dive
mode, but taking into account slow ascend speed (3m/min from 50%
up, 1m/min from 6m) you still can achieve TTS values of 20 minutes
(for a dive to 30m). The counter intuitive part for me is, that I
am not aware of any recreational dive courses that take into
account different ascend speeds depending of depth. Obviously,
this is something very well known in the technical diving scene.
And TTS of 20 minutes can hardly be considered recreational.</p>
<p><br>
</p>
<p>Issue closed.</p>
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