What should happen if a diver arrives early at a decompression stop?

When a diver arrives early at a decompression stop, the correct procedure is to start timing the decompression stop as soon as they arrive. This is crucial because decompression stops are designed to allow the body to safely eliminate nitrogen that has been absorbed under pressure. Timing accurately at this point helps ensure that the diver does not ascend too quickly, which can lead to decompression sickness.

Arriving early at a decompression stop does not negate the need for the diver to complete the required duration at that depth. Therefore, it is essential to begin timing the stop immediately to fulfill decompression obligations safely. By doing this, the diver adheres to the necessary protocols and effectively manages nitrogen levels in the body, contributing to a safer ascent.