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One of the most obvious, albiet more expensive, ways to deal with a computer failure is redundancy. Carry *2 computers* with you at all times. I have an Aladin Pro that I've used for years and recently bought the Nemisis Nitrox II. When 1 computer fails just use the back up. This applies to all diving equipment. It may get a little tricky when diving Nitrox however. If the Nemisis shuts down while I'm on EAN I pull out my tables and calculate the best I can (most of the time terminating the dive). When I get topside I'll use tables with a large safety margins put in to calculate for subsequent dives. This is just the way I do it. By no means is it the best solution. Safe diving, Sean On Tue, 13 Feb 1996, Xavier Merlin wrote: > Hi fellow divers, > > I while ago i started a thread on scuba-l about what to do when > your computer for one reason or another fails in the middle of a dive. > (unlikely but .... Murphy likes diving also!) > > The question was : can one continue the dive on multilevel tables ? > (if you have a depth gauge and a timer) > > Of course the easy way out is to abort the dive , do safety stops > and wait on surface until offgassed to start again with a fresh computer or on > tables. > > But suppose you are on a luxury dive safari tour and 3 more dives are scheduled > before going back on land again. > > I summerize (try to) the feedback of the thread to some extent as follows : > > - In order to continue one has to rely heavily on memory > (where was i at the time of failure) and since this > is not so reliable one should abort the dive and do > safety stops. > > - You cannot adequately and safely map a computer dive > profile to pressure groups on a table. > > - Some divers 'follow' their computers > (do you plan a dive and dive the plan ?) : > from computers to tables ... it should be the opposite > way ! > > I selected some options which seems safe to continue the dive. > Maybe you have something to add or comment about. > > Here are the 'few' SAFE options besides bailing out : > > - You plan your dives on a table (multilevel) or on a PC > and use your computer as backup or diveplan-check-device > and having a timer and depth gauge you can safely > continue the dive if you dive according your plan. > (you need to have the plan with you on a slate for instance) > You can do other dives using the same table but if you want to check > your diveplan you need another computer and because a new computer > starts with zero ongassing you should be completely offgassed. > NEVER NEVER NEVER use someone elses computer !!!!! > > - If you do not use tables , you can continue if you use > a backup computer and you have that with you on any > dive you make. Besides I think that if you dive EAN you > should set both computers to the same mixture right ? > (this is another risk factor to account for !) > > Maybe there exists other SAFE ways .. I wonder. > Anyone out there ? > > Meanwhile happy SAFE diving ! > > -- > ________________________________________________________________ > > Xavier Merlin #### ########### > ## ## ## ## > Kredietbank NV ## ## ## ## > 8484 Projectgroep IBIS Technisch ##### ######## > Havenlaan 2 ## ## ## ## > B-1210 Brussel ## ## ## ## > Belgium #### ########### > > Tel +32 (2) 422 7487 Fax +32 (2) 422 8106 E-mail u18218@kb*.be* > ________________________________________________________________ > > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. >
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