Charlie99
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I suggest you look again at the NOAA/Navy tables. 81-90' for 31-40 minutes puts you into pressure group K, 50 min SI only gets you to I. You have ZERO allowable time at 60'.Tekkie once bubbled...
The morning dives are usually 80-90ft max for 30-40 min, 50 min surface interval, 60ft max for 45-50min. On almost any tables these numbers are in the red after a dive. [then added] According to US Navy tables I was fine
It sounds like you were just following a DM around and relying upon him to dive a safe profile.
This is a good example of where a computer that tracks multilevel dives is a good idea.