I want a non conservative computer

[WetDane]

Welcome to the boards...

ScubaBunny mentioned the Cochran and I can attest that it is not a conservative computer - you do have the option to change the conservatism to your liking too...

Here's a sample, last night we dove to 100fsw (I actually went to 105), both divers on EAN31, buddy ha a stinger and after a while at 100 he signaled 6 minutes in NDL remaining - I checked mine and had 26 minutes of NDL... Both my buddies frequently go into deco obligation, I have yet to do it on these dives... I think part of that may be that the Cochrans are made for the military primarily... Oh, I also like the display - nice and big with good back light...

Big T

 

[Mverick]

Big readout and Let's me pick the conservatism I want. I use the Nemesis 11a. Have 2 of them. Would like to get my hands on a NAVY though. Oh, My only complaint is it eats batteries. But they are easily changed.

 

[Bob3]

Probably one of the biggest producers of the "undeserved hit" is the heavy repetative diving schedule of the type folks do on vacation, sometimes including liveabords, etc.
Folks tend to push the NDLs to the max in order to squeeze as much bottom time as possible, loading up the slower offgassing deep tissues. That's probably just the time when you might want to consider using your Suunto, or at least cranking a little more conservatism out of whatever you're using.
One of the more common things heard by the chamber techs in resort areas is: "but my computer said... ".

 

[Divesherpa]

I dive 1 to 3 times a day and I fly 3-4 times a week. I don't fly over 3000 feet. I dive to the limits of the most liberal computer I can find, but I would never get in a 10,000 foot cabin without having waited at least 12 hours after dive. I prefer 24.
I agree that flying after diving can be costly to one's body, which is why I never break my own rule. Some figures from a computer are not meant to be followed.
I could be considered hard-core I guess, but I don't think that a firm understanding of pressure related illnesses would put anyone in a 10,000 cabin four hours after a dive. That's ludicrous even compared to USN standards.
My post was only regarding dives without flight requirements. I don't advocate, or agree with, the philosophy of commercial airlines within 12 hours of diving, especially repetitive multi-day diving. I vote for spending an extra day on shore and enjoying non-diving events, cultures, etc......
I hope this clarifies any questions regarding my posting.
Thanks for your attention

 

[Bob]

Hello Divesherpa,
I understood what you were trying to say. I fly for a living and many of the flights are to the Bahamas or somewhere in the Carribean. If it's a dive trip, I always brief my passengers about DCS and time to fly. The company's Chief Pilot has given me permission to stay on the ground if someone hasn't met the minimum of 12 rule. As Tommy pointed out, there was quite a discussion on this board not too long ago about DCS and flying. This person, a instructor no less, ended his last dive at 2:45 PM. Well, his DC gave him a time to fly of four hours. He got on the plane around 7 PM and later in the flight took a hit. That's about as liberal a 'puter as one can get don't you think? My question to him was, Didn't you remember the 12-24 rule that you were taught in basic open water class? If we as a dive community demand, and dive with these "liberal computers", then we better have enough training and common sense to understand the information they give us! Hopefully this will give you a better insight into the matter. :tree:Bob

 

[Dr Deco]

Dear Boga and Readers:

Just remember that the more liberal you are with the ascent criteria, the more conservative you should be with activities at the last stop. That last stop is on the surface - - not at 10 feet. Yes, this is a decompression region, and is why waiting time is required before diving again.

Many divers seem to forget that you are loaded with inert dissolved (and gaseous) nitrogen while back on the boat. Be careful with running, climbing, lifting, etc.

Dr Deco

 

[100days-a-year]

Thanx Dr.Deco..There are so many variables it's hard to explain to folks sometimes.The software with visible loading grafix for each compartment can really show this .Some dives are so loaded towards the end that the medium and slow compartments can be very saturated hours later.Also, it can't be stressed enough how much an individuals conditioning can cause a "unexpected " hit.The DIR guys really hit home with that.Most people don't want that strict a lifestyle tho.

 

[Scubaroo]

There is a chart on page 55 ranking computers from "liberal" to "conservative". I think it is worth noting that the chart is alternatively labelled "risky" to "less risky".