Log book entries

[parrothead600]

My computer has my last dive recorded at a max depth of 69' for 1 hour & 3 minutes. The "tissue loading bar graph" is well in the green, not even close to the yellow zone because most of the dive was in shallow water(15'-30'). This was my only dive for the day, or month for that matter.
If I go by the PADI chart, 63 minutes @ 69' exceeds the NDL by 23 minutes. My question is, What do I enter in my log book as the final pressure group?

 

[in_cavediver]

My computer has my last dive recorded at a max depth of 69' for 1 hour & 3 minutes. The "tissue loading bar graph" is well in the green, not even close to the yellow zone because most of the dive was in shallow water(15'-30'). This was my only dive for the day, or month for that matter.
If I go by the PADI chart, 63 minutes @ 69' exceeds the NDL by 23 minutes. My question is, What do I enter in my log book as the final pressure group?

First, think about your question. Are you asking if you can retroactively apply tables to a dive you did on your computer or are you asking what you should do for a dive log.

If you want to know about applying tables, you have already asnwered your question. Your dive is off the PADI table and would have required the special procedures to surface had you lost your computer. With that, there is no repetive pressure group.

Second, if your merely asking what to have in your dive log, that's even easier. Simply log anything and everything you may want to know from your dive. IE, what wieght, location, vis, time of year, temp etc. Add info about gas usage if you want to track it. Then write anything else that might be of interest later. There is no hard an fast rules as this is YOUR log and for YOUR reference.

 

[www.scubamazing.com]

I wouldn't worry about the pressure group. You're judging your dive off one dive chart and logging it on another.

If you want to write down your pressure information, just summarize as best you can with the information that your dive computer gives you.

 

[1_T_Submariner]

I tried this too when I started using a computer and found it to be useless. I just log everything else and make a comment that I was diving with a computer. If you can print out your dive profile you could attach it to the page. There are different log pages out there more suited for use with a computer.

 

[eleven]

you can get commercial deco tables that will give you a group , exept the dive table and times are also different to the padi scuba tables

 

[nauidiver2004]

I retroactivly apply the NAUI tables to my dives at the end of the day and keep track in my logbook so in the event of a computer failure I have a starting reference point and may not have to loose an entire day of diving. For the most part, when on a dive holiday I am able to complete only two dives per day, so I dont go off the table until the end of the week. When this occurs, I just make a small note in my logbook 'NGA' for No Group Available. If a failure occurs and I have this notation in the log, I know I am done for 24hrs. So far it hasn't happened but if it did early in the week, I would be able to get in the water the next day because I have the table info logged. It may not make sense to anyone else but it only has to work for me.

Ken

 

[Iruka]

Since you were essentially doing a multi-level dive (most of it shallow) you can't accurately get a pressure group from the PADI table. If you'd been using the wheel, or some other sort of table, and kept track of how many minutes at each depth, you might be able to come up with a "letter" for your log book. This question comes up all the time with vacationing divers, because we try to give them a lot of dive time, and some of the dives are deep. So they generally write "computer" in the little box where one would normally write a pressure group letter. If you want to be more specific, you could note "4th green bar" or whatever you saw upon surfacing.

 

[dlegros]

I attempt to retrospectively apply the RDP (table or wheel) to all my dives just for the practice.

I mark the dives as computer aided, and apply the max depth against the dive time. If it's within the limits I mark the PG, if not I cross out the ending PG box.

YMMV

Dom

 

[parrothead600]

Thanks for the replys. Most of my dives have been pretty close to the max depth for the majority of the dive, so it's not a problem with applying the dive charts.
I like the idea of writing in the # of bars showing on the computer in place of the pressure group when the chart doesn't fully apply.

 

[landlocked]

Build your own dive log with the items that you want to keep track of and quit trying to use PADI's.