lerpy - 12/01/2013 11:15 AM
I have no research overly to back this up, but I can offer two pieces of insight. First in all the planning I have done on my computer and all the tables I have looked at, as long as you are under the 21 foot mark there is no limit for no-deco. My computer does not kick into measuring deco until I am below 20FT. As well I have to assume you can stay there a long time as there are several underwater hotels in the world, one in the Keys, they all seem to be at 20FT or less and are not pressurized other than of course air to breath. There’s my non-scientific input.