PADI Divemaster Certification Practice Exam

To successfully complete two dives as no stop dives, which of the following must be calculated?

1. The average depth of both dives

2. The maximum allowable surface interval

3. The minimum surface interval between the dives

4. The total air supply duration

The correct answer is: The minimum surface interval between the dives

To successfully complete two dives as no stop dives, the minimum surface interval between the dives is crucial to ensure that the nitrogen absorbed during the first dive is reduced before the second dive begins. The concept of a minimum surface interval relates to the nitrogen loading in the body and how long it takes for this nitrogen to off-gas safely after a dive. It's essential to allow sufficient time for your body to eliminate excess nitrogen, especially when both dives are planned to be no-stop dives. Although other factors, such as average depth and total air supply duration, may be important in dive planning, they do not specifically pertain to ensuring that you can complete two successful no-stop dives. The maximum allowable surface interval is generally not a factor in this scenario; instead, the focus should be on minimizing surface intervals to promote safe diving practices for multiple dives in a day.