What is the correct ascent rate in sea water?

The correct ascent rate in sea water is 30 feet per minute (fpm). This rate is established to ensure that divers can safely ascend while minimizing the risks of decompression sickness, commonly known as "the bends."

As divers ascend, reducing the pressure on their bodies, dissolved gases in their tissues begin to come out of solution. A controlled ascent rate helps facilitate a gradual release of these gases, allowing them to escape safely without forming bubbles that could lead to symptoms of decompression sickness or other complications.

Maintaining an ascent rate of 30 fpm strikes a balance between efficiency and safety. It allows divers to complete their ascent in a reasonable time frame while still adhering to safety protocols. This ascent rate is often accompanied by safety stops, particularly after deep dives, to further mitigate any risks associated with rapid changes in pressure.

Understanding and adhering to the correct ascent rate is essential for diving safety and helps reinforce good diving practices among divers.