[PATCH] MOD of oxygen at pO2 of 1.6 is 20ft

[Rodrigo Severo]

On Mon, Jul 6, 2015 at 4:24 AM, Henrik Brautaset Aronsen
<subsurface at henrik.synth.no> wrote:
>
> On Sun, Jul 5, 2015 at 11:03 PM, Rick Walsh <rickmwalsh at gmail.com> wrote:
>>
>> Serious question: does anyone switch to 50% at 22m?
>
>
> For tank MOD markings around me usually round to the nearest 3 (meters).  So 21 meters (not 22) for 50% and 6 meters (not 5) for o2.  Etc.  Also to the nearest 10ft.

I dive metric, my stops are all multiple of 3 m and my tanks have the
real MODs, not rounded ones, as I understand MODs as maximum operation
depth, not mandatory other-gas depth ;) But obviously I understand
that having the MOD equal to some deco stop might seems less
confusing.

Truncating sounds more conservative but actually I bet that if your
dive plan gets unsafe because of half a meter on a deco stop or worst
half a foot you have other problems not rounding related so rounding
seems to me as the right thing to do.


Rodrigo Severo