MacDive Forums

If I edit a dive and enter the start and end pressure, the SAC is not calculated ?
Is this a bug, because the average depth is already known, must I grab my calculator to calculate the SAC.
Please tell me I am missing a feature.

Have you created and added a tank to the dive?

This is covered in the docs in detail:

http://www.mac-dive.com/help/

You are right!
I did not create a tank
Macdive doesn't know what cilinders I am diving of course.