When using your computer’s display, what should you determine and note?

When using your computer's display for dive planning and monitoring, it is crucial to determine and note the deepest depth you can reach without exceeding a partial pressure of oxygen of 1.4 ata (atmospheres absolute). This is essential for safety as it helps prevent oxygen toxicity, which can occur at higher pressures. The value of 1.4 ata is a widely accepted limit to minimize risk during recreational diving, especially when utilizing enriched air (nitrox) mixtures that contain a higher oxygen content than standard air.

Monitoring this specific metric allows divers to plan their dives effectively, ensuring that they stay within safe limits and manage their exposure to oxygen throughout the dive. Being aware of this depth helps to promote safer diving practices by avoiding situations that could lead to adverse effects related to oxygen exposure.

Understanding deep limits based on your specific tank's blend is a critical component of enriched air diving training, which emphasizes the importance of maximizing safety while allowing for longer bottom times. Thus, knowing your deepest depth in relation to the oxygen partial pressure is vital for all enriched air dives.