What's the best Wrist Mount Dive Computer for both tech and recreatonal diving & why?

[MechDiver]

leadweight once bubbled...


So, while I am not a deco diver, it seems to me that the guys cutting tabels and using timers on their deco dives are doing the requisite planning and have the discipline to keep themselves out of trouble, and the ones relying on computers for deco diving are going to get into trouble. And from what I can tell, this proceedure is fundamental, not restricted to GUE trained divers and their brethren.

Point well made. And yes, it has nothing to do with GUE, or FBI, or CIA. It is fundamental to staying alive while doing deco, and especially staged deco.

There are, IMO, only 2 computers capabile of doing planned deco dives, and neither would be considered a "recreational" computer. They are both also based on preplanned profiles.

Phil

 

[Northeastwrecks]

Uncle Pug once bubbled...

On non-deco dives we usually *plan* them on the fly... that is we keep track of our profile through time and do what we want with it.

Why plan your non-deco dive with your computer???

I'm not sure that I follow how you plan on the fly.

If I'm doing a non-deco dive, I use the plan function to read out my NDL (I've checked it and it matches the RDP for the values I checked, FWIW). With that limit in mind (and written down), I execute the dive.

On ascent, I follow the same plan as O-ring. 1 at 40, 1 at 30 and 3 - 5 at 20.

 

[Scuba]

Northeastwrecks once bubbled...


I'm not sure that I follow how you plan on the fly.

If I'm doing a non-deco dive, I use the plan function to read out my NDL (I've checked it and it matches the RDP for the values I checked, FWIW). With that limit in mind (and written down), I execute the dive.

On ascent, I follow the same plan as O-ring. 1 at 40, 1 at 30 and 3 - 5 at 20.

Not to answer UP's questions. But I do know DIR uses an averaging method where they calculate and average out depth and time every five minutes.

"The poor man's imitation of a dive computer", if you ask me.

Good back up though.

 

[Northeastwrecks]

MechDiver once bubbled...


Point well made. And yes, it has nothing to do with GUE, or FBI, or CIA. It is fundamental to staying alive while doing deco, and especially staged deco.

There are, IMO, only 2 computers capabile of doing planned deco dives, and neither would be considered a "recreational" computer. They are both also based on preplanned profiles.

Phil

Well??? Which ones can do that? Can they handle SAC calculations, etc?

 

[JeffG]

Scuba once bubbled...


Not to answer UP's questions. But I do know DIR uses an averaging method where they calculate and average out depth and time every five minutes.

"The poor man's imitation of a dive computer", if you ask me.

Good back up though.

But most computers (well the ones I have seen) do not allow "planning" while diving, so if your dive plan changes.

(An old thread stated a case where your fin fell off after X amount of time at a depth of X ft)

1) UP's method - you could figure out in advance if the dive was still within the NDL limits.
2) Computer - Do it and hope your computer doesn't go into a Deco mode.

 

[O-ring]

Scuba once bubbled...
O-ring,

I can't answer your question in regards to deco dives. I don't do them at this time. MechDiver made some mention of how this could be done. Maybe others can expound on it. I realize it may not be suitable for your deco model or not available.

For non-deco dives I use my computer to see where I stand in regards to time remaining before deco obligations occur. Why? because it can track my actual profile with more precision than I can and I may like to stay down as long as possible while remaining within non-deco guidelines, or stay away from it a certain amount of time. The precision argument with respect to deco theory is well understood, but we all draw the line somewhere. I'am aware of the tables guidelines as to depth and time in case something doesn't look right.

I think its generally accepted that computers can give more bottom time due to their more precise tracking capabilities. Obviously theres a whole lot more to it than this, especially in deco dives.

Somehow the argument is always made that it can fail, or that somehow you'll be glued to it and neglect dive awareness, or that many people using them aren't good divers and don't know how to use them. And? Whats the point? Don't get your poles crossed while extrapolating. This seems like a pretty outdated argument at this date and age. All that is applicable to tables and mental tracking.

How about making mental errors due to your brain being narced or other reasons, and maybe a look at the computers will tell you something is not right, assuming you can still figure this out.

I think you don't get more comments here in favor of computers because many of its users aren't out to change the world and preach gloom and doom if you don't use one, unlike others.

I was going to ask if DIR see's any benefit to using a computer, but that question has already been answered. It says it all.

But where's the pudding?

Apparently, Mensa is revoking all memberships of members who dive with computers and have worked with NASA, DAN, and several other highly respected scientific bodies (the NSF among them) and have categorically proven scientifically that computers rot the brain.

Here's the link: http://www.mensa.org/press_releases/scuba/computers=idiocy.dumb.htm

 

[leadweight]

O-ring once bubbled...

Apparently, Mensa is revoking all memberships of members who dive with computers and have worked with NASA, DAN, and several other highly respected scientific bodies (the NSF among them) and have categorically proven scientifically that computers rot the brain.

As along time Mensa member I can say that this is not the case. However, retests are being ordered for all those found participating in this forum.

 

[Scuba]

JeffG once bubbled...


But most computers (well the ones I have seen) do not allow "planning" while diving, so if your dive plan changes.

(An old thread stated a case where your fin fell off after X amount of time at a depth of X ft)

1) UP's method - you could figure out in advance if the dive was still within the NDL limits.
2) Computer - Do it and hope your computer doesn't go into a Deco mode.

Good points JeffG,

This was touched upon earlier with respect to something more important than a fin - your buddy.

I would like to hear how those who use computers deal with this event, aside from just taking an unknown risk.

Is there any fundamental reason that would prevent the implementation of both systems to garner their benefits?
I realize the resulting numbers won't match, but I think it could be valuable in some cases nonetheless.

O-ring,

Since my brain is so rotted, Would you not agree that it would be best for me to use a computer instead of trying to think.

 

[O-ring]

O-ring,

Since my brain is so rotted, Would you not agree that it would be best for me to use a computer instead of trying to think.

I think you should use a computer...

 

[Scuba]

O-ring once bubbled...

I think you should use a computer...

Finally!

Let There Be Light

I always knew that if I tried hard enough even DIR would let me use a computer.

:wavey: