In 2013 are you using a tech computer (as a computer) or BT for your tech diving?

[Dr. Lecter]

Petrel with a 70/30 gradient factor

I'm assuming you meant 30/70, though I imagine the curve for 70/30 would be pretty amusing.

 

[karstdvr]

I think now that VPM computers are more and more common you'll start to see more people from the DIR community adopt them as it eliminates the biggest issue of everyone on the team having a different algorithm. .

Ironically,I have seen quite a few of the DIR faithful when not diving with themselves, will pull out a dive computer.

 

[LiteHedded]

Ironically,I have seen quite a few of the DIR faithful when not diving with themselves, will pull out a dive computer.

I mean, I dive one all the time. if you saw me you would think i was 'diving a computer'

but it's in gauge mode. I dont even know how the computer part works

 

[karstdvr]

I dont use them because I just dont see any benefit to the thing for my diving. not because of any knee-jerk DIR black and white hatred of the things

Indian is the perfect place for a dive computer. I go upstream with an initial depth of 130',but,some of the larger room upstream bring to 110-120'. Coming out when doing an excursion downstream,this place averages in the 70s,so I really want that outgas credit. Then of course you got the mud tunnel which drops you back into 130'. The dive computer is great at this point because I get the multilevel benefit,but can change my plan and stay longer downstream if I find awesome conditions.

---------- Post added October 22nd, 2013 at 06:22 PM ----------

I mean, I dive one all the time. if you saw me you would think i was 'diving a computer'

but it's in gauge mode. I dont even know how the computer part works

I am talking about Shearwaters. Now if someone can afford a Shearwater just to use in gauge mode,then let me talk to you about some land on Venus I will sell you cheap.

 

[LiteHedded]

Indian is the perfect place for a dive computer. I go upstream with an initial depth of 130',but,some of the larger room upstream bring to 110-120'. Coming out when doing an excursion downstream,this place averages in the 70s,so I really want that outgas credit. Then of course you got the mud tunnel which drops you back into 130'. The dive computer is great at this point because I get the multilevel benefit,but can change my plan and stay longer downstream if I find awesome conditions.

---------- Post added October 22nd, 2013 at 06:22 PM ----------



I am talking about Shearwaters. Now if someone can afford a Shearwater just to use in gauge mode,then let me talk to you about some land on Venus I will sell you cheap.

I've done that dive. it's not difficult to plan it without a dive computer. not much deco to speak of on that dive

a lot of guys can afford it (not me though)

thinking about it now I can only think of one guy I know who uses a plain bottom timer. they're just not that good. they don't log dives, they tick back over to zero if you go too long, don't average depth etc. you have to shine a light on them to read them.

but I wouldn't put it past some guys to run whatever profile the computer spits out. the idea I think is for newer divers not to become reliant on them as they are unnecessary

 

[Dr. Lecter]

I am talking about Shearwaters. Now if someone can afford a Shearwater just to use in gauge mode,then let me talk to you about some land on Venus I will sell you cheap.

I have two Petrels. While I generally run both as computers, I've definitely made use of their gauge modes, too.

 

[karstdvr]

the idea I think is for newer divers not to become reliant on them as they are unnecessary

I can understand it is wise to walk before you run. I guess I have paid my dues with generating tables,heck even used to dive the Nest with DrX (Exley's program written in Basic) for tables. On that same dive,I don't think I will ever go back to tables,because my dive computers are so reliable.

 

[macado]

I cut tables with Multideco/Vplanner for my primary dive plan (with backup/contingency plans)
1 x Bottom Timer (for use with tables)
1 x Computer (if all else fails)

 

[Captain Bil]

Both. I always use computer, BT and "cut" tables matching computer algorithm. Nothing less will do!

Exactly my procedure. That is open or closed circuit, no differentiation.

Sent from my XT907 using Tapatalk 2

 

[ucfdiver]

Indian is the perfect place for a dive computer. I go upstream with an initial depth of 130',but,some of the larger room upstream bring to 110-120'. Coming out when doing an excursion downstream,this place averages in the 70s,so I really want that outgas credit. Then of course you got the mud tunnel which drops you back into 130'. The dive computer is great at this point because I get the multilevel benefit,but can change my plan and stay longer downstream if I find awesome conditions.

While I agree a computer can plan this dive closer to the real model, I wonder how much real world difference we're really talking. 1hr upstream (21/35) I would call 120', which leaves 38min of deco using VPM+2 and 20ft/70ft for deco gas. If you take a quick look in decoplanner before your dive, you'll notice that you can basically shave 2-3min of deco off your deep stops every 10 minutes you're on 21/35 downstream. My last dive in Indian was to the Wakulla/Super rooms which was around 100 minutes bottom time, and cutting tables and estimating the average depth came within a couple of minutes of my buddy's Sherwater.

I might do an extra <10min of deco on that dive compared to a computer, but I don't know that 10 minutes motivates me to go dump $1000 on a computer. Of course if I was further along in life rather than 2 years out of college, wanted an OLED screen, and had extra spending money I would likely splurge and get the Sherwater.

Ironically,I have seen quite a few of the DIR faithful when not diving with themselves, will pull out a dive computer.

I've seen GUE instructors dive a computer in front of Jarrod and Casey, too. Heck, I've even dove off GI3's boat a couple years ago and seen a dive computer floating around. I don't think anyone is hiding a computer these days.