The PADI Tec 45 course starts where the Tec 40 finishes. It increases the depth and your formation as a technical diver. This course is the second subdivision from the PADI Tec Deep Diver course. It consists in other 4 immersions of technical training, where oxygen at the 100% will be used to accelerate the decompressions and to have no limit of decompressive time.
People interested in tec diving that does not meet the requirements to access to the 45 or 50 tec diving courses yet, can take the 40 tec diving course. It is the first step of PADI Tec Deep Diver, and it consists in 4 dives.