TDI Courses

Here at Tech Dive NZ, we offer a number of TDI dive courses. TDI, or Technical Diving International, is a technical diving certification agency providing courses on on mixed gas diving, overhead environments and rebreathers. The TDI courses we offer are:


TDI Nitrox Diver

The Nitrox Diver is designed for recreational divers wishing to utilize enriched air nitrox (EANx) as a breathing gas. The objective is to train divers in the benefits, hazards and proper procedures for using nitrox mixes from 22% to 40% oxygen content.

Pre-requisites: Open Water
Duration: 2 evenings or 1 day
No. of dives: 2 open water dives
Equipment required: Standard scuba gear
Qualification limits: Nitrox mixes between 22% - 40% oxygen
Cost: $200

Download TDI Nitrox outline (PDF)

TDI Advanced Nitrox & Decompression Procedures

The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of forty five (45) msw / one hundred fifty (150) fsw. The most common equipment requirements, gear set-up, and decompression techniques are presented along with the benefits, hazards and proper procedures for utilizing EAN-21 through one hundred (100) percent oxygen for accelerated decompression. This combination is an excellent entry into technical diving! Please contact us if you would like to take these courses separately.

Pre-requisites: Advanced Open Water, Nitrox
Duration: 4-5 days
No. of dives: 1 confined water session, 6 open water dives
Equipment required: Double tanks, stage bottle and ancilliary equipment. Please see pdf or email us for more details
Qualification limits: 45m, all nitrox mixes and oxygen for deco.
Cost: $1,000 excl. gear, $1,150 incl. gear

Download Advanced Nitrox & Decompression Procedures outline (PDF)

TDI Cavern Diver

The Cavern Diver programme provides divers with an awareness of the underwater cavern environment and provides an introduction to the skills required to safely undertake dives within the cavern zone. During the course you'll practice line handling, reel use and emergency procedures in the open water and then conduct four cavern dives to practice these skills in the overhead environment.

Pre-requisites: Open Water & 25 dives
Duration: 2 evenings and 1 weekend
No. of dives: 1 open water dive, 4 cavern dives
Equipment required: This class has specific equipment requirements, please see pdf document for more details.
Qualification limits: Exploration of the cavern/daylight zone only, maximum 60 linear metres from surface, max. depth 40m, no decompression.
Cost: $500, plus boat fees paid directly to charter operator

Download Cavern Diver outline (PDF)

TDI Introductory Cave Diver

The Introductory Cave Diver programme takes cavern divers beyond the cavern zone and into the complete darkness of the cave. You will be taught all the skills required to safely dive in this challenging environment and tested on these skills with a variety of emergency scenarios and drills within the cave environment.

Pre-requisites: Cavern Diver or equivalent
Duration: 2 evenings and 1 weekend
No. of dives: 1 open water dive, 4 cave dives
Equipment required: This class has specific equipment requirements, please see pdf document for more details.
Qualification limits: Limited penetration into the cave environment, no complex navigation, gas limit 1/6th doubles, max. depth 40m, no decompression.
Cost: $550, plus boat fees paid directly to charter operator

Download Introductory Cave Diver outline (PDF)

TDI Full Cave Diver

This course is the 3rd stage of training in the cave diver development program. Advanced cave dive planning and the practical execution of more complex dives are the focus of this course. Students will cover a range of typical scenarios commonly faced by cave divers, plus expand and refine the skills learned on the previous two classes. Emphasis is placed on skill refinement through actual cave penetration dives.

Pre-requisites: Introductory Cave Diver
Duration: Minimum 6 days
No. of dives: Minimum 8 cave dives, with at least 240 minutes bottom time.
Equipment required: Full cave configuration.
Qualification limits: Full cave penetration, no limits.
Cost: Price on application

Download Full Cave Diver outline (PDF)

TDI Advanced Wreck Diver

The Advanced Wreck Diver programme extends basic wreck diving skills to allow divers to make more challenging wreck penetration dives whilst maintaining awareness of their surroundings. The course introduces advanced line/reel use, team protocols and advanced dive planning.

Pre-requisites: Wreck or Cavern Diver Specialty (or equivalent)
Duration: 3 days
No. of dives: 2 open water dives, 4 wreck penetration dives
Equipment required: This class has specific equipment requirements, please see pdf document for more details.
Qualification limits: Full wreck penetration, no limits.
Cost: $700, plus boat fees paid directly to charter operator

Download Advanced Wreck Diver outline (PDF)

[an error occurred while processing this directive]