PADI Divemaster Certification Practice Exam

Monitoring air supply closely is essential in low-on-air situations as it allows divers to make informed decisions about their ascent. By keeping track of how much air remains in the tank, divers can initiate a controlled ascent before they reach a critically low level. This practice enables them to manage their ascent rate and time, ensuring safety and preventing the risks associated with rapid ascents, such as decompression sickness or barotrauma.

In addition to helping divers to ascend at a safe rate, closely monitoring air supply encourages better situational awareness. It allows divers to assess their surroundings, understand their current status, and decide when to conduct a safety stop if necessary. Overall, this practice is crucial for maintaining safety during a dive, particularly when facing the potential hazards of low air supply.