Scuba Diving International (SDI) AFS 270 Practice Test

A repetitive dive is defined as any dive made within which time frame of a previous dive?

A repetitive dive is defined as any dive made within 24 hours of a previous dive. Made within 48 hours of a previous dive. In which your computer indicates there is residual nitrogen left in your system from a prior dive. Both the first and third answers are correct.

Correct Answer:

Both the first and third answers are correct.

Explanation:

The key idea is that a repetitive dive is tied to nitrogen still in your body from an earlier dive. The usual rule is that a dive within a day of a previous dive counts as repetitive because residual nitrogen can affect how you’re loaded for the next dive. Practically, if your dive computer shows there is residual nitrogen left in your system from a prior dive, the next dive is also considered repetitive, since you’re continuing with that nitrogen loading. So both the 24-hour time frame and the computer’s indication of residual nitrogen describe repetitive dives. The 48-hour window isn’t the standard definition here.

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