What is the recommended maximum ascent rate for divers?

The recommended maximum ascent rate for divers is 18 meters (60 feet) per minute. This ascent rate is established to help reduce the risk of decompression sickness, which can occur if divers ascend too quickly from depths where they have been exposed to increased pressure.

Ascending at a controlled rate allows nitrogen, which has been absorbed by the body during the dive, to safely off-gas and help avoid the formation of bubbles that can lead to decompression sickness. An ascent rate of 18 meters (60 feet) per minute provides a balance between efficiency and safety, allowing for a rapid escape from shallow depths while still being cautious in deeper waters.

Other ascent rates, while potentially used in specific circumstances or guidelines, do not align with the standard practices aimed at ensuring diver safety during ascent. Following the 18 meters (60 feet) per minute recommendation helps divers manage their safety effectively as they return to the surface.