Surface Interval

How to find your Surface interval using an RDP table

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This content is for members only.

This comes in handy as an Instructor or Divemaster when you have 2 dives with planned depth and time and you want to find out how long you need to stay at the surface in between.

Question: Doing two dives, the first dive to 22 meters for 30 minutes and the second to 16 meters for 49 minutes. What will be your minimum surface interval.

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