If a diver accidentally exceeds the no-stop limits, what should they do?

When a diver exceeds no-stop limits, the appropriate action is to follow the computer's instructions for decompression. Diving computers are designed to provide real-time data on a diver's exposure to pressure and time, helping to ensure safe ascent profiles for the diver to mitigate the risk of decompression sickness.

When this occurs, it usually indicates that the diver has entered a situation where they need to perform a decompression stop or follow specific ascent procedures to safely release nitrogen absorbed by tissues during the dive. The dive computer calculates and suggests the necessary ascent rate and any required stops along the way to help the diver return to the surface safely.

In contrast, performing an emergency ascent can lead to serious health risks such as decompression sickness due to rapid changes in pressure. Ending the dive immediately without following proper procedures can also result in unsafe scenarios. Contacting a dive master may not be feasible or timely enough to ensure safety during the ascent process. Therefore, adhering to the dive computer's instructions is crucial for a safe return to the surface in this context.