What is the function of a dive computer?

A dive computer is an essential piece of equipment for divers, providing critical information that supports safe diving practices. Its primary function is to track depth, time, and ascent rates throughout the dive. By continuously monitoring these parameters, the dive computer calculates no-decompression limits, helping divers avoid decompression sickness by ensuring they ascend at a safe rate and remain within safe depth limits for a given time.

This information is vital for managing dive profiles and understanding how long a diver can safely remain at certain depths. In addition, dive computers often include features such as alarms for exceeding maximum depth or ascent rates, further enhancing safety. These capabilities make the device invaluable for both recreational and technical divers.

While other options may touch upon aspects of diving, they do not encapsulate the primary and comprehensive functions of a dive computer, which focuses on essential dive metrics that directly affect diver safety and planning.