If the delay is greater than 1 minute and shallower than 50 FSW, what is the correct procedure?

The correct procedure when the delay is greater than one minute and shallower than 50 feet sea water (FSW) is to round the delay time up and add it to the first decompression stop. This method ensures that divers remain safe and adhere to the necessary decompression schedules required for safe ascent, particularly after spending time at depth.

When a delay occurs during a dive, it can impact the amount of residual nitrogen in a diver's body which is critical to consider for preventing decompression sickness. By rounding the delay time up, the diver is taking a cautious approach to account for any potential nitrogen loading that may have increased due to the extended time underwater. Adding this time to the first decompression stop ensures that the diver allows sufficient time for the body to off-gas nitrogen effectively, thereby enhancing safety.

This procedure reflects established decompression practices aimed at maintaining diver safety, particularly under the specified conditions of a delay and the depth involved.