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At 11:28 13/03/01 , Paul Braunbehrens wrote: >The only place this makes sense is when doing rec. dives and wanting to do a couple of safety stops. Doing a 2 minute stop at 1/2 the maz depth and a 3 min. stop at 15, I find it annoying not to have a seconds display, because I end up having to round up, and might do a 2.59 minute stop. It's just boring, and since I want to be setup with 2 timing devices anyway, I just made sure the second one has seconds on it. It's not a question of timing stuff to the second, it's a question of getting an idea of where you are in the minute, beginning or end. > >Other than that I agree with what you say. 2.59 instead of 2.00? Uhng! I think I've got a better solution for you. Have you seen the research that shows that from a decompression perspective, there is no safety to be gained from 'safety' stops? rgds billyw ><billy@v3*.co*.au*> wrote: >~ >>At 06:06 10/03/01 , Frank wrote: >> >> >>>I just found that when on a deco stop, looking at a dive computer would show >>>the run time in minutes. Hence if I needed to do a 3 minute stop at 40m, my >>>actual stop would be between 3 and 4 minutes. >> >>No. If you left your last stop on time and your ascent >>rate is steady, you won't miss anything off stops that >>are 10M/30ft apart cause the minute transit time is >>calculated into the run time. Between the longer stops >>that are 3M/10ft apart, your run-time should show the >>transit time as instantaneous so if you leave the last >>stop on time you'll clip, what? 20 seconds of the next >>stop. Insignificant. And you leave THAT stop on time >>so you don't accumulate the deficit. >> >>However, since steady gradients are more efficient than >>'stair-steps' for off-gassing when shallow, you're probably >>doing more deco-good for yourself spending that 20 seconds >>ascending TO the stop than hanging at it. >> >>With an organic process like decompression in a chaotic >>system like the human body, timing stops to the second is >>a waste of time. >> >>rgds billyw >> >> >> >> >>'llo >>that are >>are 3M >> >>> If I need to do 3 or 4 deco stops >>>this could add 3, 4, or 5 minutes to my run time or it would change my planned >>>time between deco stops. I know this is only a small point but I just find it >>>annoying. >>> >>> >>>cheers >>>frank >>>----- Original Message ----- >>>From: <billy@v3*.co*.au*> >>>To: "Frank" <fbaars@bi*.ne*.au*>; <techdiver@aquanaut.com> >>>Sent: Friday, March 09, 2001 2:37 PM >>>Subject: Re: Underwater timers. >>> >>> >>>At 06:00 8/03/01 , Frank wrote: >>> >Billy, >>> > >>> >I use an analogue watch with depth and bottom time as my backup. The watch has >>>a >>> >large second hand which can be use as a stand-in stop watch. >>> >>> >>>What do you need to time in seconds? >>> >>>rdgs billyw >> >>-- >>Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >>Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > >-- >Paul B. >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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