At what depth can the inside tender breathe oxygen?

The correct response indicates that the inside tender can breathe oxygen at depths shallower than 45 feet of saltwater (FSW). This is based on established safety protocols for saturation diving and undersea rescue operations. At depths greater than 45 FSW, the partial pressure of gases becomes significant, increasing the risks associated with oxygen toxicity. Breathing pure oxygen is generally safe at shallower depths because the partial pressures are low enough to prevent toxic side effects, allowing the inside tender to operate safely and effectively.

Understanding the physiological limits for breathing gases is crucial in maintaining safety for personnel involved in deep-sea operations, making 45 FSW a key depth reference for oxygen breathing during rescue missions.