Become a certified extended range wreck diver with SSI The SSI Extended Range Wreck Diver program provides you with everything you need to plan and conduct wreck penetration dives in the daytime zone at depths shallower than 40 meters. Learn how to use specialized equipment, gas management concepts and team skills to safely conduct wreck penetration dives. As an Extended Range Wreck Diver, you'll be able to go deeper into wrecks than ever before, opening up a new world of exciting explorations - start your advanced wreck diving adventures now with the Extended Range Wreck Diver course!