How should a diver perform a controlled ascent?

A controlled ascent is an essential practice in scuba diving to ensure the safety of the diver and to mitigate the risks of decompression sickness. The correct approach involves maintaining a steady ascent rate while closely monitoring air consumption. Ascending too quickly can result in nitrogen bubbles forming in the bloodstream, which can lead to decompression sickness.

By controlling the ascent speed, typically recommended at no more than 30 feet per minute, divers allow gases dissolved in body tissues to safely release as they decrease pressure. Additionally, monitoring air consumption during the ascent is crucial as it helps divers ensure that they have enough gas to complete their ascent and any necessary safety stops. Safety stops are often incorporated at shallower depths, typically around 15-20 feet, to allow additional time for de-gassing.

The focus on a steady ascent rate and air consumption not only enhances safety but also aligns with best practices recommended in diving training. Proper buoyancy control, communication with dive buddies, and the awareness of surrounding conditions are equally important during this phase of a dive.