Dan
Contributor
Last Sunday when I went diving in Flower Garden Banks, Gulf Mexico, Texas with Fling Charter Liveaboard, one of the diver got bent after the first dive of the day & doing 5 dives on the day before, as posted here: A diver air lifted off the coast of Galveston, Texas by US Coast Guard on July 16, 2017 So, that prompted me to review my own dive profiles and see how far I was from the No-Decompression Limit (NDL). I used Nitrox 32 for those NDL dives & figured that I could use NOAA Nitrox 32 No-Decompression Table to see how far I was to the NDL. However, I'm a bit rusty in using the table since I've been relying on my dive computer in the last 12 years. Here are my dive profiles (AD = Average Depth in feet, DT = Dive Time in minutes, SI = Surface Interval in hours:minutes)
#. AD, DT, SI
1. 68, 54, 02:17
2. 71, 46, 02:33
3. 57, 56, 02:32
4. 60, 58, 12:55
5. 72, 44, finish
I pretty much follow my dive computer, SUUNTO D4, for NDL dives. From Chart 1 of the Table, below, Dive 1 is in the pressure group J. After SI = 02:17, Chart 2 shows the pressure group drops down to group H. Going across to Chart 3, for Dive 2 around 70 ft, the chart only allows the dive time of 14 minutes with 46 minutes of residual nitrogen. I pretty much already went over the allowed dive time by 32 minutes. Am I reading the table correctly?
#. AD, DT, SI
1. 68, 54, 02:17
2. 71, 46, 02:33
3. 57, 56, 02:32
4. 60, 58, 12:55
5. 72, 44, finish
I pretty much follow my dive computer, SUUNTO D4, for NDL dives. From Chart 1 of the Table, below, Dive 1 is in the pressure group J. After SI = 02:17, Chart 2 shows the pressure group drops down to group H. Going across to Chart 3, for Dive 2 around 70 ft, the chart only allows the dive time of 14 minutes with 46 minutes of residual nitrogen. I pretty much already went over the allowed dive time by 32 minutes. Am I reading the table correctly?