The PADI Tec 40 course introduces divers to limited decompression diving within accepted recreational depth limits. Although you should take this course in complete Technical diving equipment if you wish to continue on through the Tec 45 and Tec 50, the limits of the Tec 40 qualification allow for more flexibility. Therefore, it is easy to accommodate divers interested in very limited technical diving since the Tec 40 equipment requirements are only a bit beyond the standard recreational kit.
The PADI Tec 40 Course is generally the first foray for the diver into the realm of diving beyond the established limits of recreational diving. This course is the first step in a series of courses, each building on the skills and techniques of past experiences. A certified PADI Tec 40 Diver is able to plan and execute limited Decompression dives to a depth of 130ft (40m) using equipment and additional tanks suitable for diving to these depths.