Posted by maddiver on September 06, 2001 at 12:17:51:
In Reply to: but it LOOKS so cool!.. posted by Cabo on September 06, 2001 at 07:48:02:
They inflate the huge bladders emptying their tanks so the instructor can call the dive on air and only be in his frigid wetsuit for 19 minutes. Not to mention the drag component adds to work (effort) coefficient creating more warmth and also necessitating more air consumption. So that hp 120 lasts him/her all of 22 min.. See these guys are really smart