What is the most common vertical distance between decompression stops?

The most common vertical distance between decompression stops is typically 10 feet. This standard distance is based on a balance between efficiency and safety.

When divers ascend after a deep dive, they must gradually decompress to allow nitrogen, which can have built up in their bodies due to pressure, to safely be expelled. By using a 10-foot vertical interval between stops, divers can effectively manage their ascent speeds and reduce the risk of decompression sickness. This distance allows sufficient time for off-gassing, which is the process by which nitrogen bubbles are eliminated from the tissues.

In practice, this 10-foot interval also aligns well with commonly accepted ascent rates and is practical for divers to maintain during their ascent. It strikes a balance that promotes safe diving practices while minimizing the complexity of stop management. Different conditions or advanced diving techniques might use varied intervals, but for most recreational diving scenarios, 10 feet remains the norm.