Logging Computer Dives question

[RussR]

How do you transfer dives from the computer to the log book?

For example I had a dive in Cozumel to 85 feet for 47 minutes. If I log that it of course comes up as exceeding the NDL.

Do people log the dives as multilevel? Or do you use average depth?

Any advice is, as always, appreciated.

 

[TheWetRookie]

Just log as 85' and 47 minutes. There is a section/box on your log book that asks if a computer was used, check it and then don't worry about it. Fill in the rest as applicable, This log is for your personal use.

If you have your own computer now just use it as you can not match up a computer and tables, so lose the tables.

 

[scubawally]

do not loose the tables...what I do is find your average depth and add 10 feet to it then add another 10 if the water was cold or if you worked really hard...calculate your end group from this

 

[TheWetRookie]

do not loose the tables...what I do is find your average depth and add 10 feet to it then add another 10 if the water was cold or if you worked really hard...calculate your end group from this

Interesting, first time I have heard of this. Question though, how does this work with being at different depths for different lengths of time?

 

[OutOFBreath]

Huh???

 

[Kstnbike]

do not loose the tables...what I do is find your average depth and add 10 feet to it then add another 10 if the water was cold or if you worked really hard...calculate your end group from this

Can you translate that to English please? or at least clear that up.


Anyways...when logging a dive based off of your computer there is no need to determine the ending pressure groups based on tables. Your computer is performing constant calculations based on your bottom time, depth, etc. For repetitive dives your computer remembers the previous dives and takes that into the calculation when determining your NDL's for the next dive. One important rule you must always remember is to NEVER switch computers between dives. If you were to switch computers between dives, the new one doesn't know that you already have residual nitrogen and this may lead to you breaking the NDL's or worse.

-Kstnbike

 

[do it easy]

Can you translate that to English please? or at least clear that up.

I think scubawally is Candian, so to translate, I *think* he was saying to read aboot this thread, eh?

 

[TheWetRookie]

I think scubawally is Candian, .......... eh?

Hey, I resemble that remark Just because we do things the right way in comparison with the rest of the world... (this should be good)

 

[Phenol]

I always log both max and average depths (I like the fact that my Vyper computes average depth for the dive). I was once told I should calculate pressure groups based on the average depth, if I need to. This is the first time I've heard of adding 10' to that figure, but it seems like a good idea.

 

[Charlie99]

My Oceanic computer has a 12 bar bargraph to indicate relative N2 loading, as well as a 5 bar max ascent rate indicator and a 12 bar O2 loading indicator.

I'll log max depth and time in the spot provided on the log, and then in the area for pressure group I'll note the 2 bargraph values, with a 3rd for a nitrox dive. Example: "N9, A2, O5". It doesn't take up much room, which is good because I often put all dives of a 2 or 3 tank boat trip onto the same log page. If the maximum N2 loading bargraph reading was significantly higher than my surfacing level, I might note that (or occasionally, that I had x minutes of deco obligation, where x is always less than 10 for my type of diving).

Charlie Allen