I recently conducted a slightly informal experiment on my personal SAC rates recently.
Two weekends ago I was in Cayman, and I did a total of eight guided dives over two days. Very relaxed slow pace, led by a DM. According to my computer my SAC rate varied between 0.37 and 0.39 cu ft per min.
Last weekend I was back in BVI - same me, same water temperature, same gear. I did three dives, but all three dives were solo dives, in much lower visibility waters, hunting lobster. Two dives had moderate current but the last dive had no current at all. For each dive my SAC rate was 0.62 cu ft.
Probably no surprises there (except for the fact that no current on my final dive in the second set didn't reduce the SAC), but interesting when you strip out a lot of the variables to see such a direct correlation in change of SAC rate attributable to a single factor.
Two weekends ago I was in Cayman, and I did a total of eight guided dives over two days. Very relaxed slow pace, led by a DM. According to my computer my SAC rate varied between 0.37 and 0.39 cu ft per min.
Last weekend I was back in BVI - same me, same water temperature, same gear. I did three dives, but all three dives were solo dives, in much lower visibility waters, hunting lobster. Two dives had moderate current but the last dive had no current at all. For each dive my SAC rate was 0.62 cu ft.
Probably no surprises there (except for the fact that no current on my final dive in the second set didn't reduce the SAC), but interesting when you strip out a lot of the variables to see such a direct correlation in change of SAC rate attributable to a single factor.