Info Some History of the NOAA Oxygen Limits

[sea_ledford]

20 foot stop on O2 is a pain... sink to 21' you get a high PO2 warning, rise to 19, you get a ceiling violation warning.... can't win for a few minutes until the ceiling gets a bit higher.

I use 10 foot as my last stop, but generally keep to 15-18 feet.

And a note on the panel, implementation was asked about, but was not addressed beyond something like "That's the dive computer companies job."

 

[boulderjohn]

Sure, I do that when practical. As has been discussed here before, buoyancy control can be challenging when trying to hold a 10 ft stop during a drifting deco in the open ocean with large swells passing through. I mean I can do it if I have to but it requires constant attention and fine adjustments.

Maybe as a compromise we should move up to 15 ft after clearing the 20 ft stop?

If you are on full oxygen, you can do the stop at any depth between 10-20 feet.

 

[Deep Wreck Diver]

Sure, I do that when practical. As has been discussed here before, buoyancy control can be challenging when trying to hold a 10 ft stop during a drifting deco in the open ocean with large swells passing through. I mean I can do it if I have to but it requires constant attention and fine adjustments.

Maybe as a compromise we should move up to 15 ft after clearing the 20 ft stop?

That's pretty standard for the teams that I dive with. Our stops are set in metres but most people clear their 6m deco stops and then shift to somewhere between 4 & 5 metres for the 3m stops. In any sort of sea, that is just a whole lot easier than trying to sit at 3m.