What is the recommended ascent rate for cavern divers?

The recommended ascent rate for cavern divers is no more than 9 meters (30 feet) per minute. This ascent rate is established to reduce the risk of decompression sickness and to allow divers to safely off-gas nitrogen that may have accumulated in their bodies during the dive. Following a controlled ascent rate helps ensure that divers can manage their ascent without excessive stress on their bodies and allows for better monitoring of any potential issues that may arise while returning to the surface.

In cavern diving, which involves navigating within concealed underwater environments, maintaining a proper ascent rate is crucial. It also allows divers to have adequate time for any necessary safety stops, particularly if they are diving at deeper depths. A more conservative approach, such as the 9 meters per minute guideline, promotes safety and good diving practices, as rapid ascents can lead to dangerous consequences like nitrogen bubbles forming in the body, hence the importance of adhering to recommended limits.