What does diving with EAN32 at 33 msw for 23 minutes qualify as?

Diving with EAN32 (Enriched Air Nitrox with 32% oxygen) at a depth of 33 meters seawater (msw) for 23 minutes qualifies as a no-decompression dive because it does not exceed the limits outlined for no-decompression diving using an appropriate dive table or computer.

In the context of recreational diving, a no-decompression dive allows a diver to ascend to the surface without the need for staged stops to avoid decompression sickness. The dive profile, including both the depth and time, falls within the parameters that enable the diver to safely return to the surface without requiring decompression stops.

Other types of dives, such as decompression dives, would require planned stops during ascent to allow excess nitrogen to be safely released from the body, which is not the case in this scenario. A deep dive typically refers to dives exceeding certain depth thresholds, which may vary based on certification guidelines but generally start around 30 meters; while 33 msw might be considered deep in some contexts, it is the no-decompression status that is the defining characteristic here. Lastly, a multilevel dive involves varying depths during the dive, which is not applicable in this situation where the dive is conducted consistently at one depth.