The Rule of Thirds.

[O-ring]

When did you get the new position?

I figured I spent so much time with the mussels that they needed a leader(they all basically look the same, so there was no clear leader)...so I called for a vote and they took the 5th so I was the only voter and I voted for myself. Maybe a little Floridian voting, but it worked...they didn't call for a hanging chad count..

 

[MSP Rescue Diver]

O-ring once bubbled...
so I called for a vote and they took the 5th so I was the only voter and I voted for myself. Maybe a little Floridian voting, but it worked...they didn't call for a hanging chad count..

Yup - no more hanging chads. We screw it electronically now!

So as the new leader are you going to mandate butt rings and clear skirts?

Hail To The Chief

 

[O-ring]

So as the new leader are you going to mandate butt rings and clear skirts?

You haven't been lurking in other NDI areas have you?

Nah, I have a black skirt...but I do have a butt ring.. Where is the butt on a mussel anyway? They would look pretty funny in little clear miniskirts though..

 

[roakey]

3) In a siphon

4) In a spring (but you should use 1/3s anyway)

Roak

 

[The Chairman]

but remember the rule of thirds is dependent on the diver with the highest SAC.

UP, I am looking forward to hearing about the rule of halves!

 

[Uncle Pug]

Let's cut the idle chatter in here O-ring and FLL some folks are still taking the test.

If you are done turn your keyboard over and go out for a dive.

 

[O-ring]

3) In a siphon

I am not a cave diver, but is this because a siphon has inward flow and you would basically be fighting it to get back out?

 

[roakey]

O-ring once bubbled...
I am not a cave diver, but is this because a siphon has inward flow and you would basically be fighting it to get back out?

Yes, in a siphon water flows away from the entrance and it takes you longer to get out than to go in. In a spring the opposite is true (like starting your dive into the current).

Roak

 

[Simplicimus]

Since there are no prizes for the most correct answers, I'm just going to pick the question I like.

6) What is rock bottom?

Rock bottom is computed jointly with your dive buddy. The computation starts with your dive plan, and deciding how deep and how far from the ascent line/location you will dive. You then assume that your team will have an OOA emergency at the deepest, farthest spot. How much air do you need to get both of you back to the surface, doing all stops, and ascending at 10 feet per minute, using an assumed emergency/panic SAC rate of 1 cubic foot per minute per diver? After you figure out how many cubic feet you need to do this, you convert that number of cubic feet to the equivalent psi for each of your team member's tank configurations. I dive a single LP 104 so my conversion factor is 3.9. That gives me a turn pressure of 700 psi on a 100 foot dive which permits a direct ascent to the surface. My buddy's tank configuration may be different. (S)he will have a different conversion factor, and therefore probably will have a different turn pressure. Rock bottom is reached when one of us hits our turn pressure. That's when the dive is turned and we head back/up.

 

[ckharlan66]

O-ring once bubbled...


...hanging chad count...

Why does everyone always want to hang me. I try to get along with everyone.

Chad