TDI Diver Training

Course OverviewTDI Extended Range trains experienced technical divers to use compressed air as a breathing gas for deeper staged decompression dives where helium may not be available. TDI identifies...

Course OverviewTDI Cave Survey teaches trained cave divers how to collect, verify, and use survey data in the underwater cave environment. The official TDI page explains that the course is intended...

Course OverviewTDI Helitrox teaches divers to plan and conduct staged decompression dives using helium in the breathing mix to reduce inert gas narcosis. The official TDI page identifies a maximum...

Course OverviewTDI Mine introduces divers to the basic principles of mine diving using a single primary guideline. The official TDI Mine Diver Level I standards describe it as the first stage in the...

Course OverviewTDI 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...

Course OverviewTDI Diver Propulsion Vehicle (DPV) teaches certified divers how to plan and conduct technical dives using scooters while managing the added hazards they create. The official TDI page...

Course OverviewTDI Intro to Tech is the bridge between recreational diving and formal technical training. TDI describes it as the initiation and skills foundation for later courses such as Advanced...

Course OverviewTDI Full Cave is the third stage in TDI's cave-diver development program and expands the skills learned in Cavern and Intro to Cave. The official TDI page describes advanced cave dive...

Course OverviewTDI Advanced Nitrox expands a diver's gas knowledge beyond basic nitrox and is one of the foundation courses for technical diving. TDI states that the course qualifies divers to use...

Course OverviewTDI Advanced Wreck trains qualified divers to plan and conduct more serious wreck penetration dives with technical-level preparation. The official TDI page describes it as the next...

Course OverviewTDI Sidemount is designed to teach certified divers how to safely use side-mounted primary cylinders as an alternative to the traditional back-mounted setup. The official TDI standards...

Course OverviewTDI Intro to Cave builds directly on Cavern Diver training and introduces the basic principles of cave diving using a single primary guideline. TDI describes it as the second level in...

Course OverviewTDI Nitrox is an entry-level enriched air course for divers who want to understand and use nitrox mixtures from 22 through 40 percent oxygen. The official TDI course page positions it...

Course OverviewTDI Cavern Discovery is a guided introduction to cavern diving for recreational divers who want to experience the overhead environment under direct instructor supervision. The official...

Course OverviewTDI Cavern teaches certified divers the minimum knowledge and skills for diving in overhead environments while remaining within the limits of natural light. The official TDI page is...

Course OverviewTDI O2 Service Tech teaches the procedures required to prepare and maintain scuba equipment for oxygen exposure and technical mixed gases. The official TDI page describes oxygen...

Course OverviewTDI Advanced Mixed Gas CCR is the highest closed-circuit rebreather diver course that TDI offers. The official TDI page describes it as training divers to use the full capabilities of...

Course OverviewTDI Advanced Blender builds on Nitrox Gas Blender training and adds the preparation and blending of oxygen- and helium-based gases for technical diving. The official TDI page explains...

Course OverviewTDI Mixed Gas CCR is an intermediate closed-circuit rebreather course for divers ready to extend beyond air diluent decompression or helitrox CCR limits. The official TDI page...

Course OverviewTDI Nitrox Blender teaches the proper techniques, equipment requirements, and hazards involved in blending nitrox gases for scuba diving. The official TDI page frames the course as...

Course OverviewTDI Helitrox CCR teaches closed-circuit rebreather divers to plan staged decompression dives using a helium-based diluent to reduce narcosis. The official TDI page describes the course...

Course OverviewTDI Rebreather Full Cave is the third stage in TDI's rebreather overhead-environment development program. The official TDI page describes advanced rebreather cave planning, practical...

Course OverviewTDI Air Diluent Deco CCR is the next step for open-circuit technical divers crossing into CCR decompression diving or for Air Diluent CCR divers progressing beyond no-decompression...

Course OverviewTDI Rebreather Intro to Cave is the second level in TDI's rebreather cave-diving development path. The official TDI page explains that the course introduces the basic principles of...

Course OverviewTDI Semi Closed Rebreather is an entry-level course for recreational divers who want to use a TDI-approved semi-closed circuit rebreather. The official TDI page explains that the...

Course OverviewTDI Rebreather Cavern is the first course in TDI's rebreather overhead-environment progression. The official TDI page describes it as training the necessary skills to conduct cavern...

Course OverviewTDI Air Diluent CCR is the entry-level closed-circuit rebreather course for divers using a specific approved CCR unit with air or nitrox as the diluent. The official TDI standards...

Course OverviewTDI Cave DPV teaches trained cave divers how to use diver propulsion vehicles in the cave environment. The official TDI page explains that divers learn safe DPV use, components, care,...

Course OverviewTDI Advanced Trimix is the top open-circuit TDI diver course for divers who want to use hypoxic trimix on very deep technical dives. The official TDI page describes training for depths...

Course OverviewTDI Stage Cave teaches trained cave divers how to extend bottom time or penetration distance by using stage cylinders. The official TDI page explains that divers learn to plan dives...

Course OverviewTDI Trimix teaches experienced technical divers to reduce narcosis on deeper dives by adding helium to the breathing gas. TDI describes the course as training divers to plan and...