Rescue-licensed or equal divers are able of responsibility. At any second, they may have to carry out CPR, take away a diver from the water, or give emergency oxygen. But when a diver holds his breath, the air can no longer escape because it expands, and eventually, the alveoli that make up the lung walls will rupture, inflicting critical injury to the organ. What we need to know is how the likelihood of DCS changes as we increase the length of the preflight floor interval. Our first series of experiments consisted of 1 dive followed by a flight. A dive to 60 feet sea water /18 meters for 55 minutes was performed, adopted by a predetermined surface interval. The altitude exposure of the flight was eight,000 feet/2,440 meters for 4 hours. Make certain that you simply’re confident you know the way to act if something goes mistaken. Too usually, divers enable the skills that they study of their entry-degree course to lapse over time. In some instances they by no means correctly mastered the talents within the first place. Poor instructors could have missed abilities as a result of a large class sizes or a fluke performance on the time. How long do you have to wait between dives? Surface Interval Time (SIT) must be at least 10 minutes between dives. If your SIT is less than 10 minutes, you must consider your second dive as a continuation of the first dive. NAUI recommends a SIT of at leas