On 19-03-17 21:13, Robert Helling wrote:
Jan,
On 19 Mar 2017, at 13:59, Jan Mulder <[email protected]
<mailto:[email protected]>> wrote:
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.
It uses the ascent speeds that you set. Would your rather assume some
standard speed like 18m/min or 10m/min? I don’t think this would be a
good idea.
Yes, I now understand that the planner is using the entered ascent
speeds also in recreational mode. Somehow, I was just thinking of the
old days with the recreational tables where there was no difference in
ascent speed over the entire water column, and was indeed assuming some
standard like 18m/min or 10m/min. But I agree that the way it works now,
is just more flexible, both catering divers that like to differentiate
and divers that like a standard ascent rate all the way.
Just as a remark: It seems, in their most recent versions both major
dive planning programs v-planner/multi-deco and pasta deco added their
version recreational mode (or something like that: Stay as long on the
bottom as the gas allows). It seems, we were trend setters somehow…
Funny, can't find it in my install of multi-deco, but I don't care
either, because that is not the way I plan dives anyway :-)
best,
--jan
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