[PATCH] Support different salinity in planner

[Anton Lundin]

On 14 November, 2014 - Robert Helling wrote:

> 
> On 13.11.2014, at 23:04, Anton Lundin <glance at acc.umu.se> wrote:
> 
> Anton,
> 
> > This came out of a discussion with a frend who had his Uwatec 330 show
> > him a depth of 72 meters while his Liquivision Xen showed him 69 meters.
> > This was due to that his Xen was set in salinity mode, while Uwatec 330
> > always shows a depth calibrated against fresh water.
> 
> 
> but we agree that this affects only the “names” we attach to certain ambient pressures. The actual deco schedules are _not_ affected (besides rounding to 3m multiples) since they only depend on pressures. There is no point in comparing 69m (sea water) depth dives to 69m (fresh water) dives, don’t we?
> 

Yes, from a deco perspective the pressure is the relevant thing, but as
stated earlier, a lot of the time our planning depth comes from
salinity-independent measurements as done by sonar equipment.

Of course we can always re-calculate our sonar-depth to a corresponding
"salt-water-depth" but my opinion is that entering the salinity level
is simpler.


//Anton


-- 
Anton Lundin	+46702-161604