Thanks for asking. Diving with dual CCR’s isn’t as mainstream as Single CCR is rapidly becoming. However, those that are pioneering the way for dual CCR mostly agree that an OC bailout is necessary during a bailout situation for various reasons. To answer your question, yes, we agree that it is necessary and my dive buddy (@Fishtickah) had an OC regulator on each unit being fed from his diluent bottles. In the event he needed more OC gas, I had a long hose on my right tank for him. Also, he doesn’t consider one unit a “bailout” and one a primary. He dives them like your would two OC sidemount tanks, switching back and forth periodically. Doing so allows him to monitor the integrity of each unit on a regular basis, lessening the need to “bailout” in a much more unpredictable manner.
Not necessarily. Each line has an arrow pointing toward the exit. The lines in video you pointed out are part of a circuit. A circuit means the line with the blue arrow will eventually meet back up with the orange arrow line. The line with the orange arrow is part of the “main” line that we followed from the entrance. We simply stayed to the right every time we encountered a “T” in the line. It’s best practice in cave diving to mark the line you came in on with a cookie and exit using the same line since you know the distance (very important if using open circuit scuba) and you know it a good exit. Thanks for watching.
