Why is a dive considered a no-decompression dive?

A dive is considered a no-decompression dive when it does not require mandatory safety stops during ascent to avoid decompression sickness (DCS). In a no-decompression dive, the diver can ascend directly to the surface at a safe ascent rate without the need to pause at certain depths, as would be necessary in a decompression dive.

This means that the dive profile stays within the limits defined by dive tables or a dive computer, allowing divers to ascend freely without the risk of nitrogen bubbles forming in body tissues—an outcome that can occur if a diver ascends too rapidly after exceeding no-decompression limits.

The absence of required safety stops simplifies the ascent process and contributes to the classification of these dives as no-decompression dives.