A Career in Commercial Diving For those contemplating a commercial diving career but hesitant to take the plunge, JDC invites you to a firsthand experience. Our introductory dives, led by seasoned instructors within the sheltered environment of our dive tank, provide the perfect taste of what lies ahead. Join an elite community geared not just towards diving, but also towards diving with conviction, dedication, and the utmost in professional conduct. JDC – Meticulously Crafted for Divers, by Divers.