What is a key part of the general procedure for a deep dive?

Precise planning and slow descent are essential components of the general procedure for a deep dive. This approach ensures the safety and well-being of divers as they navigate deeper waters. Proper planning involves understanding the dive site, potential hazards, gas management, as well as establishing a clear communication protocol among divers.

Slow descent is equally crucial because it allows divers to equalize pressure in their ears and sinuses, reducing the risk of barotrauma. It also helps prevent the onset of nitrogen narcosis, which can occur at greater depths due to increased pressure. By descending slowly, divers can monitor their physical responses and make timely adjustments if necessary.

In contrast to this key procedure, engaging in rigorous physical exercises before diving may not significantly enhance safety or effectiveness in the water, and diving without a partner can increase risk factors in the event of an emergency. Additionally, decreasing the amount of air in the tank does not contribute positively to the dive and could lead to potentially life-threatening situations.