Course Overview
TDI Decompression Procedures prepares qualified divers for planned staged decompression diving, which is a major shift from normal no-decompression sport diving. The official TDI page identifies a maximum operating depth of 45 metres/150 feet and describes the course as the first step beyond standard recreational limits. When combined with TDI Advanced Nitrox, it becomes one of the core foundations for later technical courses.
The course is intended for advanced certified divers who want to understand decompression theory, extend bottom time responsibly, and move toward additional technical training. TDI lists a minimum age of 18, SDI Advanced Adventure Diver, Advanced Diver, or equivalent certification, and proof of 25 logged open water dives as prerequisites. Students should already have reliable buoyancy, trim, and situational awareness before adding decompression obligations, gas switches, and longer ascent schedules.
Training covers decompression gas choices, tables and computers, contingency planning, gas switching, equipment selection, predive checks, SMB or lift bag deployment, and emergency procedures. In High Springs, Florida, it is a practical step for divers preparing for deeper springs, wrecks, caves, or technical projects. Successful students should leave with a more disciplined approach to ascent planning, team communication, and decompression execution under supervision.
