Blackbeard live-aboard questions

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As I recall most most of our dives were in the 50-70 min range, it really depended on depth, what we were doing, and what there was to see. On our drift dive we touched 130 and some of our group went to 150 and yes that is crazy only being on single 80s.  So that dive was under 30 min.  The only other short dive I was was the last one, that was cut short because my camera case flooded.