mikemill
Contributor
On Sunday I did three dives off a boat and on the third dive I was able to dive with my brother (he was doing his AOW so the first two dives were with his class).
The last time we dove (a few months back) we had nearly identical SAC rates but on this dive I outlasted him. When we got back onboard I had well over 400 PSI more and he started at a few hundred PSI more than I did.
When I got home I downloaded my computer and did the SAC calculations. My previous rate was in the 0.85-0.90 range. That day my first dive was 0.91 (not surprising as I ended up bobbing around on the surface for 10 minutes while the boat dealt with diver issues and it was a 110' dive so slightly excited), the second was 0.7, and the third was 0.66.
Gear wise the differences were a drop of 2lbs and using steel 80s (over filled to about 90 ft3) instead of LP 95s or HP 100s.
The last time we dove (a few months back) we had nearly identical SAC rates but on this dive I outlasted him. When we got back onboard I had well over 400 PSI more and he started at a few hundred PSI more than I did.
When I got home I downloaded my computer and did the SAC calculations. My previous rate was in the 0.85-0.90 range. That day my first dive was 0.91 (not surprising as I ended up bobbing around on the surface for 10 minutes while the boat dealt with diver issues and it was a 110' dive so slightly excited), the second was 0.7, and the third was 0.66.
Gear wise the differences were a drop of 2lbs and using steel 80s (over filled to about 90 ft3) instead of LP 95s or HP 100s.