If the loss of O2 occurs while at 50' during Sur 'D', what should be considered for the next stop?

When considering the scenario of a loss of oxygen at a depth of 50 feet during saturation diving (often referred to as “Sur ‘D’”), it is crucial to manage the incident carefully to ensure the safety of the diver.

Ascending to 40 feet and beginning the stop time is appropriate because it allows for a controlled and gradual ascent, reducing the risk of decompression sickness and providing the diver with a chance to stabilize before proceeding with the dive plan. This action would typically follow standard procedures for handling reduced oxygen situations, as it allows the diver to recover from the incident at a depth where the risk can be managed more effectively.

This option focuses on a measured response that stays within established diving protocols, which prioritize safety and minimize additional risks. At this transitional depth, divers can effectively monitor their conditions, address any potential issues that arise, and still adhere to the decompression schedule without rushing to the surface, which can increase the likelihood of complications.

Understanding this ensures that divers are prepared to deal with situations involving gas losses, emphasizing the importance of following safety protocols and maintaining a vigilant approach during their dives.