While we tightened down our Yoke style regulators, he proudly screwed in his "superior" DIN valve, noting its' higher pressure rating and more secure fit.  Reserved mostly for tech diving and the Europeans, it's rare to run into a DIN fitting on a regulator anywhere in the world, and even when you do, they are easy to convert to a yoke fitting with what we affectionately term a "donut".

Prior to leaving the dock, I reminded everyone to check to make sure they had 3000psi in their tanks.  This is where we went downhill.  The imperial vs. metric debate rages on all over the world, with the US being one of the few holdouts to the imperial system.  So of course I was scolded that the only true measurement is metric, and that he had his requisite 200 bar.  Fortunately, I'm bilingual, speaking in both feet and meters, and was able . . . click here to keep reading.