What is the principle of "no-decompression limits"?

The principle of "no-decompression limits" refers to the maximum time a diver can remain at a specific depth while avoiding the need for mandatory decompression stops during ascent. When a diver goes underwater, they absorb nitrogen from the breathing gas due to higher pressure. If a diver exceeds the no-decompression limits, they risk developing decompression sickness, commonly known as "the bends," which can occur if the diver ascends too quickly after extended exposure to higher pressures.

By adhering to these limits, divers can ascend directly to the surface without having to make intermediate stops to safely release the excess nitrogen that has accumulated in their body. This principle is crucial for ensuring that divers can explore underwater environments while minimizing health risks associated with pressure changes. No-decompression limits are established based on various factors, such as the diver's depth, time spent at that depth, and the type of breathing gas used.