Descending Vertically Vs Horizontally

[pants!]

...and you should consider learning how to read and review all the posts; you got it completely wrong *******; tell you what; go get some more dives in before you offer your 2 cents

Um, he is 100% correct.

 

[Tanked Monkey]

OK, back on topic. A higher capacity tank will make it easier for you to descend at the beginning of a dive (assuming the tanks are full). The extra air that you are carrying gives you a greater swing weight which means you are more negative at the beginning of the dive. Maybe that's why scubafool, who is diving doubles, has air in his BC when descending?

And this makes descending horizontally different the descending vertically?

 

[pants!]

How's this to think about:

At the beginning of a dive, a diver with an Al80 properly weighted with no exposure protection, needs 6 pounds of air in his BC. At the end of the dive his BC will be empty.

At the beginning of a dive, a diver with an HP80 properly weighted with no exposure protection, needs 6 pounds of air in his BC. At the end of the dive his BC will be empty.

It makes NO difference that the HP80 is a little heavier in the water. That's static and does not change with time. The diver with the Al80 simply tosses 2-3 pounds of lead on the belt to compensate.

The SWING is EXACTLY THE SAME.

 

[stoddu]

Sorry guys, but here is the response I received from p_abercrombie via PM:

"hey *******

and you should consider learning how to read and review all the posts; you got it completely wrong *******; tell you what; go get some more dives in before you offer your 2 cents"

My response:
It doesn't take 500 dives to understand the science behind this concept!

 

[Charlie99]

fftopic: Alright you guys, give it up. Take "The Great Tank Swing Debate" to another thread. Let this thread get back to the original topic of descending horizontally or vertically.

Mike

Rear end first, so I can watch my slow buddy descend. :banana:

 

[P_Abercrombie]

Sorry guys, but here is the response I received from p_abercrombie via PM:

"hey *******

and you should consider learning how to read and review all the posts; you got it completely wrong *******; tell you what; go get some more dives in before you offer your 2 cents"

My response:
It doesn't take 500 dives to understand the science behind this concept!

No but it takes reading all of the posts to understand that I apologized and clarified some of my earlier comments and that all of us were in agreement when you decided to chime in with your "give your instructor certificate back" BS

 

[SubMariner]

Now kids, don't make me turn this thread around & go home!

Please, let's keep it civil and on topic.

Tank swing guys... take it to PM, svp.

Just a note from one of your friendly neighbourhood Mods.

 

[Xanthro]

The swing weight will be the same for both tanks. The swing weight will not be changed by the bouyancy characteristics of the tank. You will have to carry extra lead during the whole dive to compensate for a bouyant tank, but you would not need extra lead just at the end of the dive. If you don't understand the point these guys are making, you should consider turning in your instructors certificate.

...and you should consider learning how to read and review all the posts; you got it completely wrong *******; tell you what; go get some more dives in before you offer your 2 cents

Abercrombie, are you actually arguing that the bouyancy swing rate of tanks is affected by something other than simply air usage?

Perhaps you are not making yourself clear, and people are arguing what they think you mean as to what you actually mean, because I find it hard to believe that you think the bouyancy swing of a tank is affected by more than air usage.

The starting and ending bouyancy characteristics will be determined by tank composition, but the swing between the starting weight and ending weight is affected only by the amount of air used. Do you disagree with this statement?

 

[Xanthro]

Rear end first, so I can watch my slow buddy descend. :banana:

If I know there is nobody below me, and the bottom is pretty deep, I'll descend back first to watch the others descend as well.

I like how the light plays off them and the kelp sways back and forth.

 

[TeddyDiver]

No but it takes reading all of the posts to understand that I apologized and clarified some of my earlier comments and that all of us were in agreement when you decided to chime in with your "give your instructor certificate back" BS

I read all your posts, and i'm sorry to say but with your guidance there's a lot of divers lost when going to cold waters..
_____________________________________________

With 6lbs overweighted and low volume BC (20cbf) fully inflated you'll be negatively boyant at 80' with 7mm WS, with 7mm+5mm shorty at 60'!!
With 3mm there' no such risk.