Should I carry a backup computer?

[TheRedHead]

It isn't a joke at all. I said "the first one" for a reason, meaning his primary computer. If your primary computer failed, the dive is done (or should be).

That makes absolutely no sense. Please explain your logic.

 

[jpcpat]

For the OP, keeping a backup computer in a BCD pocket is a great idea. The Aladdin, I used to keep on my wrist went into a pocket when I switched to a Veo 250.

When I passed my IE, I bought a Citizen Hyper Aqualand as a present to myself. It's not a full out computer, but it does track my dive profiles, so if my comp fails, I can fall back on on the tables.

Weighing in on the air mode while diving nitrox: I'd rather have accurate info and dive it conservatively than introduce intentional errors. I think it's safer.

That said, using an air computer for backup on a nitrox dive is OK.

 

[diver 85]

No, a waste of money...........Just go to plan B, dive tables.........

 

[ianr33]

It is STILL raining in texas and I am bored so have been playing around with V-planner.
The results are pretty interesting.

If you dive nitrox 36 or weaker,do not go above pO2 1.4 ,do not go into deco and have one hour SI between dives it is not possible to exceed 80% CNS .

Even doing 10 dives in one day!

 

[SteveAD]

I'll agree with perone and scubastud if their pemises are combined. Your primary computer is your brain, therefore a primary computer failure is definitely an aborted dive. Now the two electronic computers I carry are my secondary and tertiary computers so if either one fails, I still have my primary and one backup, therfore, no need to abort.

 

[redacted]

I keep a couple extra computers - in my save a dive kit. I only carry 2 computers on a dive if I am solo and unwilling to risk thumbing the dive due to a computer problem. My buddies dive compatible computers and we keep pretty good track of where we are NDL wise. Thus I may not thumb a buddy dive if my computer fails. I may just continue the dive staying on the conservative side of my buddy and not pushing NDLs. I woulod probably also conduct subsequent dives with an N clean computer. Again I would stay on the conservative side of my buddy for the rest of that day and not rely completely on my computer until the next day.

Your prodigy should work fine as a backup as long as you use your head.

 

[TheRedHead]

I'll agree with perone and scubastud if their pemises are combined. Your primary computer is your brain, therefore a primary computer failure is definitely an aborted dive. Now the two electronic computers I carry are my secondary and tertiary computers so if either one fails, I still have my primary and one backup, therfore, no need to abort.

If it is an aborted dive, why are you diving with 3 computers if your plan is to ascend if the primary one fails?

 

[redacted]

If it is an aborted dive, why are you diving with 3 computers if your plan is to ascend if the primary one fails?

That's pretty obvious - to fill out the log book.

 

[SteveAD]

If it is an aborted dive, why are you diving with 3 computers if your plan is to ascend if the primary one fails?

I was being a wiseass. if my primary (brain) fails it is an abort. If I am carrying redundant electronics I will continue (a recreational no stop dive) on one.

 

[TheRedHead]

I was being a wiseass. if my primary (brain) fails it is an abort. If I am carrying redundant electronics I will continue (a recreational no stop dive) on one.

Ooooooooooh. :lol: