How to choose a second computer (looking for tips)

[exposure]

Hi there,

I have a Suunto D6 and I'd like to have a second computer with me while diving for safety. So here is the point. Do you have any tips on how to choose the proper one? Should I care on the algorithm to have the same one?...........

Yvan

 

[Scott L]

IMO the wrist watch/computer devices make nice back ups as they provide a dual use...

 

[RJP]

I go with a simple bottom timer like the Uwatec as my backup, with a dive plan in my pocket on deco dives.

 

[FishOutUvH2O]

Hi there,

I have a Suunto D6 and I'd like to have a second computer with me while diving for safety. So here is the point. Do you have any tips on how to choose the proper one? Should I care on the algorithm to have the same one?...........

Yvan

I would definitely recommend that you purchase another Suunto with the same algorithm. Otherwise, you'll end-up with dueling computers underwater.

 

[scubafanatic]

if you DO end up buying 2 computers with 2 different algorithms, make sure you also bring a spare 'quarter' with you as well, so you can do a coin-toss to determine which computer to believe.

 

[Scott L]

Unless you are on a live-aboard just end the dive and day in the extremely small likelihood of an in-water computer failure...

 

[exposure]

I never try coin-toss underwater I'll think on a bottom timer or another suunto. That's logic.

 

[Akimbo]

…So here is the point. Do you have any tips on how to choose the proper one? Should I care on the algorithm to have the same one?...

That depends a lot on why you need (or want) a backup computer.

Will a failed computer be an inconvenience for one day of diving or risk getting you flown to a decompression chamber? A simple mechanical depth gauge and a very inexpensive digital diving watch will do fine if you typically do no-decompression recreational dives on air. You may want a backup computer identical to your primary if you are on a $5000 vacation and diving Nitrox.

As far as decompression algorithms, it is disconcerting to most people if their decompression recommendations don’t match. Different algorithms will often produce different results, even though they may both be within safe limits.

Your situation may justify demoting your D6 to backup status and getting something with even greater capability.

Don't forget the learning curve. You may find two different brands, or even product families from the same manufacturer, very annoying because their user interfaces are too different.