This is the pinnacle of technical diving. Here you will use all the knowledge, skills, equipment and experience from all of your previous training and push your limits to the extreme. There are two pathways; one takes you to 80 meters / 265 feet and the other to 100 meters / 330 feet using the same full Extended Range Total Diving System you mastered in previous programs. However, you will now use a minimum of three stages for decompression and travel gases. Upon completion you will be certified as an SSI Hypoxic Trimix Instructor.