Question New to Peregrine...is the only ascent rate display the colored chevrons [each 3m/min]?
- Thread starter Wallowa
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I find it quite easy to comprehend....
Seepferdchencam
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I have never found ascent rate particularly valuable and certainly do not fixate on it, like some seem to do. 30 ft/min is actually quite fast, 60 ft/min is screaming.
Good for you Rhwest.
Seepferd...thanks...found the ascent rate put in center bottom row...could not find this in PDF manual....
Dada....my assumption is that the correct ascent rate is critical to using this computer algorithm....manual sez all data based on that ascent rate or so I thought...
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Not wishing to enter a donnybrook but after 69 years of scuba and free diving I never assume anything on a dive and verify everything....my take is that every dive is a decompression dive and the on/off gassing sequencing is dependent on not just Z, BT but the time spent in the water column at differing depths hence ascent/descent rates are crucial...with my number of potential physical issues that would predispose me to symptomatic or asymptomatic DCIs; hitting all the correct marks on a dive is crucial...number of dives for me mean nothing, some of the divers I supervised for 25 years either had "single dive experience" for years or became complacent and sloppy when they thought they were bullet proof and old salts. Any at risk activity has this risk curve over time.
No longer responsible for divers so I will not interject my views to other divers in an effort to keep them safe. Just offer my take on what has worked and what has not for me over the years. Everyone, hopefully, can make their own decisions.
Lastly "being within the NDL" is not a vouchsafe for not suffering injuries; yes, there is latitude within the recommended ascent rates but unfortunately nobody can verify whether or not physiological injury will or will not occur by adjudging the dive profile including deep stops and ascent rates. Always a matter of speculative probabilities. So called "undeserved hits" are in my estimation a result of diver error or mis-judgement; notwithstanding that, no dives can be considered 100% injury free. As exampled by osteonecrosis in old divers like myself.
OK enough. Personally I stay well within the NDL and use a very conservative GF along with extended shallow safety stops. Plus since my dives are both at SL and high altitude I am very focused on my ascent rates and accurate safety stop depths.
DSO
It has a timer... with seconds. So... if you spend 30 seconds from 12m to 9m. Stop for 30 seconds. Then Travel 30 seconds from 9 to 6m. Chill for 30 seconds. And you have 3m/min.
So using that chevron bar display to monitor "going slow" means keeping a maximum 1 bar showing on ascent. Is that not an unreasonable strategy?
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