Deep Air Poll

[Underwater Tourist]

Cast your vote, its anon


EDIT: can't change the poll anymore, but here are feet added

Depth (Meters)	Depth (Feet)
Below 30 meters	Below 98.4 ft
Below 35 meters	Below 114.8 ft
Below 40 meters	Below 131.2 ft
Below 45 meters	Below 147.6 ft
Below 50 meters	Below 164.0 ft
Below 55 meters	Below 180.4 ft
Below 60 meters	Below 196.9 ft
Below 65 meters	Below 213.3 ft

 

[NothingClever]

This is really a poll about what people remember from their course work. Most certifying agencies have a clear definition.

I deleted my grouchy commentary.

 

[broncobowsher]

Clear warm water? Cold murky high stress?
Bubbles or rebreather?

It isn't a fine line. If blurs depending on what is going on.

 

[tmassey]

Where’s the 0 meters option?

My favorite part of owning my own compressor: I dive EAN32 on every dive (or trimix where appropriate).

 

[LFMarm]

Can you please add feet to the options?

 

[sinidive]

Just floating in clear warm water vs physical work in cold, low-visibility overhead have quite different risk profiles for narcosis, WOB and CO2.

In an ideal world I would never dive on air, realistically most of my dives happen on air.

 

[boqurant]

Can you please add feet to the options?

Just multiply by 3 Big Macs point football

 

[iliketopetsharks]

Can you please add feet to the options?

They're using the units NASA used to put humans on the moon. So, metric it is

 

[Nick_Radov]

Above which blood alcohol content we enter "DUI" territory?

• 0.05%
• 0.08%
• 0.10%
• Etc.

I understand that in some contexts it's necessary to set a fixed limit for the sake of enforcing standards. But in regular diving the point isn't to press right up to the limit and stop: better to use the correct gas instead of pressing your luck and getting into normalization of deviance.

 

[chrisch]

The answer is simple enough (40m) but the question is having passed an arbitrary "limit" so what? As one moves deeper than - lets say - 30m then we should increase our preparation for anticipated issues. Narcosis is the obvious one and there is a solution to that which is available to those with the correct knowledge and ability to use other gasses. That use is not mandatory - it is a calculated risk and one which we know is not 100% agreed upon by everyone.

I would argue that deeper than 30m (OC) requires some gas planning, but I would not describe gas planning as "deep air" protocol.

But it is a great subject for people to get all fired up about. And that can be fun