Question Air consumption, is mine good?

[scubadada]

Hi @Awkwatic

Your RMV was closer to 1.0 cu ft/min if the average depth from @Wheeler925 is more accurate than yours, still reasonably high gas consumption. The only way to get a very accurate average depth is from your dive computer. Did you do that or make a good guess? You can estimate your gas consumption by recording start and end pressure on a slate or wet notes, but the most accurate way is from an air integrated computer. Many air integrated computers will give you your SAC and/or RMV from the onboard or downloaded log.

It is nice that you are interested in your gas consumption. You will find it interesting in how it changes as you gain more experience and skill, change gear configuration, or dive in different conditions. As many have said, you can expect to improve your gas consumption during your early scuba experience.

The average RMV for more than 900 ScubaBoard members who participated in a poll is between 0.5 and 0.59 cu ft/min. Approximately 2/3 of those who voted had a RMV between 0.4 and 0.69 cu ft/min. There are many helpful hints for improving gas consumption in the associated thread, buoyancy, trim, propulsion, breathing, relaxation...

Post in thread 'Average Gas Consumption'

Sunday at 3:33 PM

Just 3 days, another 1,000 views, now more than 84,000. Six more votes in the poll, now 941.

The median, mode, and weighted average remain 0.5-0.59 cu ft/min or 14.2-16.9 l/min.

If you have not voted in the poll, please consider doing so. If your average RMV has changed, please change your vote.

My wishes for great diving

• scubadada

• 

 

[The Chairman]

OTOH, female divers are the real deal; they’re blessed with divine physiology.

And they're far, far cuter.

 

[Rilelen]

OTOH, female divers are the real deal; they’re blessed with divine physiology. While the rest of us are looking to end the dive around 50bar, they still have 90-100bar left.

Am one of those blessed lady divers - an HP120 would last me about 4.5-5.5 hours at that depth. Dudes shouldn’t feel bad.

 

[rhwestfall]

things to pay attention to:

slow down
make sure you are properly weighted
slow down
avoid "hand swimming"
slow down

don't try to skip breathe, it will cause problems...

did I mention slow down?

In time you should improve.

 

[gamon]

Your RMV and SAC are not nearly as critical as your BMI.

 

[FishWatcher747]

A much better question for the OP is, can you hover in a horizontal position effortlessly without moving?

If you can't because your feet drop move weight towards your head until you can. If your head drops move weight towards your waist.

When you can do this your air consumption will improve.

 

[Blackcrusader]

And they're far, far cuter.

Especially in Asia

 

[Blackcrusader]

Your RMV and SAC are not nearly as critical as your BMI.

What does ones BMI have to do with their RMV / SAC pray tell?

 

[Awkwatic]

I think I dove with you yesterday at Pearl. Your RMV is high at 1.1. That takes in an average depth of 15ft, but I'd suggest it was a bit deeper. I'd be happy to dive with you again. Also, for some reason it was a sprint to see how far to go. If I'm wrong about your identity, feel free to correct me

Edited to add, I got a 24.3ft avg depth, assuming we're talking the same dive

Is that you, Mr. Triples? @Wheeler925 I was the big guy with the red wing and jet fins from Wisconsin.


I figured scuba was a small world, but this small! How cool!


Thanks for correcting what I assumed wrong! Nice to know the avg depth now. I was definitely referencing the dive you and I did. My computer doesn't give me the easiest way to see avg depth so I assumed.


I would love to do more dives with you. You were a fantastic buddy even though I was ill prepared with my skills (forgot how to signal you my remaining air) and only bringing one tank (You offered me a spare tank, and I really appreciate you offering that. I wish I would have taken you up on it..). Let me know when and where!

p.s. I got the video clip of you "finding" the fishing lure .

 

[Wheeler925]

Is that you, Mr. Triples? @Wheeler925 I was the big guy with the red wing and jet fins from Wisconsin.


I figured scuba was a small world, but this small! How cool!


Thanks for correcting what I assumed wrong! Nice to know the avg depth now. I was definitely referencing the dive you and I did. My computer doesn't give me the easiest way to see avg depth so I assumed.


I would love to do more dives with you. You were a fantastic buddy even though I was ill prepared with my skills (forgot how to signal you my remaining air) and only bringing one tank (You offered me a spare tank, and I really appreciate you offering that. I wish I would have taken you up on it..). Let me know when and where!

p.s. I got the video clip of you "finding" the fishing lure .

No, I'm not full on insane, and really appreciate my lower back not being shot. No triples for me.