A diver (Tony Youseman) on one of the quadruple propellersRebreather training in Malta.Santi drysuit and heating system on sale here,Rebreather diver in the red seaTDI Mixed Gas Course



The purpose of the TDI Diver Propulsion Vehicle (DPV) Course is to familiarize divers with the skills, knowledge, planning, organization, procedures, techniques, problems, and hazards of using DPV’s while technical diving. Upon successful completion of the TDI Diver

Propulsion Vehicle Specialty training, the student will be able to: demonstrate comprehension of the practical knowledge necessary for DPV diving, properly plan and safely conduct DPV dives, and implement techniques and procedures to manage and minimize DPV diving hazards.

Who this course is for:

The certified technical diver looking to extend their range and take advantage of the benefits of utilizing a DPV on technical dives

Course prerequisites:

Minimum age 18, 15 with parental consent

Certified as an SDI Open Water Scuba Diver or equivalent

Proof of at least 25 logged dives

What you can expect to learn:

The following topics must be covered during this course:

Motivations for DPV diving

Advantages of DPV use

Equipment considerations

DPV options

DPV components

Rated burn time

Care and maintenance

DPV rigging

Problem solving procedures

DPV malfunction or failure


Gas sharing with DPVs


Collision avoidance

Team separation

Environmental considerations

Appropriate vs. inappropriate dive locations

Suitable environmental conditions

Low impact DPV use

DPV diving techniques

Buoyancy and trim with DPV

Instigating directional and depth changes

DPV “parking”

DPV courtesy and etiquette

Dive planning and gas management

Turn time, turn distance, and turn pressure

Gas mix(es) and NDL’s or decompression obligations

Required Skill Performance and Graduation Requirements

The student must perform the following S-drill and skills during all dives:

Demonstrate adequate pre-dive planning

Equipment check and equipment matching

Bubble check

Demonstrate specialized propulsion techniques in varying types of flow

Demonstrate proper buoyancy control

Demonstrate proper body posture

Demonstrate proper stress analysis (detection and management)

The student must perform the following in-water skills during dives:

Proper use of DPV

Gas sharing ascent with DPVs clipped off

Ascent with a disabled DPV

Tow a team member and his disabled DPV

What’s in it for you?

Upon successful completion of this course, graduates may engage in DPV diving activities without direct supervision so long as the following limits are adhered to:

Safety and decompression stops as appropriate or necessary

Planned dives do not exceed diver’s current certification level

TDI DPV Diver minimum requirements:

Perform all dive requirements safely and efficiently

Demonstrate mature, sound judgment concerning dive planning and execution

Maintain an appropriate level of awareness and respect for the cavern environment

Log all dives

International Association of Rebreather Trainers International Association Nitrox and Technical Diver Padi Tec Rec Technical Diving International