Saturation Divers also dive shallow water by the way, I have worked as a Sat Diver the past 6 years and I started like many going to a Dive school then working in the industry for a while, you have to start at the bottom, become a tender, tender/diver, diver, ect... all depends on what you want to do. Sat diving is used not mainly for depth it allows max depth through HeO2 satuaration but the main reason is to be able to work undersea for longer periods of time.... look up Commercial Dive Schools first... do that then take a few years as a diver in the industry, I attended INPP for my Sat Course.