What should be done if the surface interval exceeds 7 minutes for surD?

When the surface interval exceeds 7 minutes for a specific dive profile, the appropriate action is to continue compression to a depth of 60 feet of seawater (FSW). This response is grounded in the need to safely manage the risks associated with nitrogen saturation and off-gassing during decompression.

In situations where a diver has been at the surface for too long, the concern arises that this additional time may alter the nitrogen levels in the body, which may lead to decompression sickness if not managed properly. By returning to a controlled depth, it allows for adjustments to be made to the decompression schedule.

Continuing normal decompression procedures is not appropriate because if an unexpected surface interval occurs, the existing plan may no longer be valid and adjustments are necessary to ensure the diver's safety. Ascending immediately to the surface would not adequately account for potentially harmful nitrogen levels that could lead to underwater complications. Returning to the original depth without change risks ignoring the effects of the extended surface interval, which could compromise safety.