ISO 24801-2:2014 - Recreational diving services - Requirements for the training of recreational scuba divers - Part 2: Level 2 - Autonomous diver Quiz 01 26Jul25 - Practice Quiz

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Question 1 of 30

Consider a scenario where an autonomous diver, certified under ISO 24801-2, is executing a planned dive to a moderate depth. During the descent phase, the diver notices a progressive loss of positive buoyancy, causing them to sink at an increasing rate despite exhaling normally. What is the most immediate and appropriate action the diver should take to regain control and ensure safety according to the principles of autonomous diving?

Immediately expel a controlled burst of air into the buoyancy control device to arrest the descent.

Increase the rate and depth of breathing to attempt to regain neutral buoyancy.

Initiate an immediate ascent to the surface without attempting to stabilize.

Descend further to the planned bottom depth to investigate the cause of the buoyancy loss.

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