@Ojai Diver
posted
"When I was fifteen, uncertified, and taking a scuba PE class, some of us students--including me-- thought that it was the height of hilarity to shut of somebody's air at the bottom of the pool. Usually you did this to a friend, who then paid you back in kind.
Not very smart, but at least it wasn't 30 meters deep. "
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There are many early training exercise that have gone by the wayside -- too hazardous or too difficult for the modern diver to master in the current very abbreviated SCUBA courses.
One was the out of air exercise. Air was tuned off - the student reached around and turned it on or removed the tank & regulator unit and turned on the air, then replaced the tank & regulator unit and continued diving.
It was a time when in instruction was the impact of an idea and practice, practice and practice until mastered as compared to the modern instruction of avoidance
Your PE dive class was during a different time with different dive training rules and regulations. You should be internally grateful to your instructor who allowed you to perfect the basics under controlled conditions in swimming pool such as out of air with practice, practice and practice .
However, the current turning off of the air by the Chinese diver borders on criminal negligence.. I strongly suspect the divers were not trained or prepared for such an event and was potentaly extremly dangerous for all in the immediate area.
Yes there should be an investigation
SDM