Something they didn't cover in my manual.

[Atticus]

The difference between fresh water and salt water is nothing to lose sleep over. When I do my MOD calculations for nitrox is use 34 ffw (and 0.79 surface pressure at Tahoe). Other than that I don't worry about the difference much.

I believe the popular Uwatec bottom timers are fresh water only and will read 3% off in the ocean. No one seems to be loadly whining about it.

Moral: It's a handy little tidbit to know, but don't stress it buddy.

 

[Wijbrandus]

Well, I'm a rookie, so I stress over everything. Until I hit the water, then somehow it all comes together and I'm not stressed at all. That's really weird... maybe it's because Santa Rosa seemed so cold at 7 am.

Anyway, ok, I won't stress it. But I'll reread the manual anyway. It always bugs the hell out of me when I find something that I missed, big or small, becuase then I start wondering what ELSE I may have missed.

Thanks for the information!

 

[DandyDon]

Atticus once bubbled...
The difference between fresh water and salt water is nothing to lose sleep over. When I do my MOD calculations for nitrox is use 34 ffw (and 0.79 surface pressure at Tahoe). Other than that I don't worry about the difference much.

I believe the popular Uwatec bottom timers are fresh water only and will read 3% off in the ocean. No one seems to be loadly whining about it.

Moral: It's a handy little tidbit to know, but don't stress it buddy.

Oceanic and Aires computers (same thing) - like them or not - do adjust for ffw when they sense being over 2,000 feet altitude - which can happen anywhere above 1,000 feet, as their barometers are not all that accurate: +/- 1,000 feet.

don

 

[KentuckyDiver]

ya alls talkin bout atmospheres. I thougt this wuz uh scube diven webb site. It must be one of them flyboy webb sites.

 

[scubajoe]

Don't go back and edit the post after you admitted to being wrong! It totally confused me. All of them say the same thing. Oh, you meant to confuse me.

Joe