What is the primary reason divers must adhere to their dive plans while using Nitrox?

Adhering to dive plans while using Nitrox is fundamentally important to minimize accident risk and ensure diver safety. Dive plans include specific details such as depth, time, and the gas mixtures to be used. Following these plans helps divers avoid situations that could lead to nitrogen narcosis or oxygen toxicity, which is particularly critical when using enriched air.

When divers select specific Nitrox blends, they also determine their maximum operating depth and optimal dive times based on that blend's oxygen content. Deviating from the plan can result in exceeding the safe limits for exposure to oxygen under pressure, which can lead to serious health risks, including convulsions or even death. Furthermore, dive plans often consider ascent rates, safety stops, and decompression requirements, all of which are crucial for safe dive practices.

While longer dive times, buoyancy management, and underwater visibility can be important aspects of diving, they are secondary to the essential goal of maintaining safety and minimizing risks associated with diving with Nitrox mixtures.