Do I Suck Alot O air?

[hudson_hawk]

Hello all
im new to diving
17 dives
ive been diving in about 30 ft deepth
i can get about 65 mins at that deepth
ive been as deep as 60 ft and my consumptin was alot higher
i use a al-80
is this ok for a newbie ??
or am i a ait hog ?
thanks all

 

[spectrum]

Hello all
im new to diving
17 dives
ive been diving in about 30 ft deepth
i can get about 65 mins at that deepth
ive been as deep as 60 ft and my consumptin was alot higher
i use a al-80
is this ok for a newbie ??
or am i a ait hog ?
thanks all

Without knowing your true average depth (how long at 30' in particular) and your exit pressure a SAC value can't be computed but anytime you can visit that dpeth and go past an hour on an AL-80 you're enjoying great novice diving IMO. Just keep diving. The deeper you go the faster you'll consume the air even with a consistent breathing pattern, it's the pressure that comes with depth. Bottom time is your friend, enjoy the 30' dives and you will be rewarded.

Going out on a limb just to give you a sense of a number.. You use 65 CF (exit with just under 600 PSI) and your down for 65 minutes meaning you use 1 CF per minute. For simplicty you do the dive at 33' (1 ATA deep, 2 ATA total) Your consuming .5 CFM at a surface rate (SAC) That's a very common rate. Of course you are not doing the whole dive at 33 feet and may exit with a little less but you may not even have a full 3000 PSI when you start so your actual SAC will be something else a little higher.

Pete

 

[Firebrand]

I'm also assuming that you're diving in cooler waters where you'll need more oxygen. If you dive in warmer waters, you'll be more comfortable, and your consumption rate will decrease.

 

[HowardE]

Hello all
im new to diving
17 dives
ive been diving in about 30 ft deepth
i can get about 65 mins at that deepth
ive been as deep as 60 ft and my consumptin was alot higher
i use a al-80
is this ok for a newbie ??
or am i a ait hog ?
thanks all

What was your consumption at 60'? How long were you at 60' for? etc. That would help... But what you've written so far sounds reasonable (good).

 

[MilitantMedic]

You sound pretty good Hudson, when I dive with customers that are "air hogs" they usally are far worse than you. They *maybe* get 35-40mins @35'. But don't worry too much about it, just keep diving and relax and enjoy the dive.

Welcome to a great sport and safe diving!

 

[hudson_hawk]

thanks all
as for a answers
25 to 35 ft avaridge proble at deapth 40 mins
cool water 50 to 65 degs F.
nothing above 69 deg
its in a quarry in wisconsin lake wazee avaridge viz 25 feet
when i read viz of 100 or more i jst think wow cant wait to dive in clear water

 

[MilitantMedic]

You may find you build better skills diving in low viz, like Nav skills for one and buddy skills as well. 100"+ viz is nice though no complaints here =).

 

[miketsp]

I'm also assuming that you're diving in cooler waters where you'll need more oxygen. If you dive in warmer waters, you'll be more comfortable, and your consumption rate will decrease.

This doesn't mean anything.
I'm generally warmer diving in cold water than in warm water because I dress appropriately. At the end of a day's diving in tropical water wearing just a t-shirt or a 3mm shorty, I come out feeling the cold.
Also in tropical waters, lightly equipped, I tend to move around much more and enjoy the freedom.
So I'd say quite the opposite.

 

[m3830431]

thanks all
as for a answers
25 to 35 ft avaridge proble at deapth 40 mins
cool water 50 to 65 degs F.
nothing above 69 deg
its in a quarry in wisconsin lake wazee avaridge viz 25 feet
when i read viz of 100 or more i jst think wow cant wait to dive in clear water

You still didn't say what your consumption was at 60. :06:

 

[hvulin]

don't worry about it. it will get better as the time/dives go by...

just make sure you allways have enough air with you to finish the dive...