What limits the bottom time during repetitive dives to prevent the risk of saturation?

Repetitive dives are managed with careful consideration to prevent the risk of saturation, which refers to the accumulation of nitrogen in the body due to repeated exposure to pressure. Each of the options presented plays a role in limiting bottom time, but collectively, they ensure diver safety through a comprehensive approach.

The surface interval strategy is crucial because it refers to the time spent at the surface between dives, allowing nitrogen levels to decrease in the body before the next immersion. This helps in managing residual nitrogen that could lead to saturation on subsequent dives.

Dive depth regulations are essential as deeper dives lead to increased pressure, which heightens nitrogen absorption in the body. By adhering to specific depth limits, divers can minimize nitrogen intake, effectively reducing the risk of saturation.

Nitrogen absorption algorithms, often embedded in dive tables or dive computers, provide specific guidelines on how long a diver can safely stay at a given depth while considering prior dives. These algorithms calculate the amount of nitrogen absorbed based on various parameters, helping divers make informed decisions about bottom times to avoid saturation.

Together, these components—surface intervals, depth regulations, and absorption algorithms—comprise a layered approach to dive safety, promoting proper management of nitrogen levels in divers' bodies and minimizing the risk of saturation during repetitive dives.