This program is designed to train divers in extended wreck penetration diving and the technical use of eanx for diving with oxygen utilized for decompression.Wreck penetration hazards are much different than those found in a cave. Those differences are discussed, appropriate planning and protocols presented along with variations in diving techniques.Qualifies Diver to make extensive wreck penetrations in depths up to 180 fw, utilizing technical eanx and oxygen decompression