tech specialists


technical diving in phuket


TDI Extended Range Diver Course

courses > technical > tdi extended range

Course Overview

This course provides training and experience required to compentently utilize air for dives up to 55msw that requires stage decompression, utilizing Nitrox mixtures or oxygen during decompression. The objective of this course is to train divers in proper techniques, and hazards of deep air diving.


Minimum age of 18.
Advanced Nitrox certified.
Decompression Procedures certified.
Proof of 100 logged dives out of which 25 must be deeper than 30msw.

Details of the course

The Extended Range diver course covers:

  • History of deep air diving
  • Physics
  • Physiology
  • Decompression options
  • Equipment consideration
  • Dive tables & dive computers
  • Dive planning
  • Procedures

Course duration and number of dives

The Extended Range diver course is a 4 day course and 6 dives are required.

Course Price

currency converter TER

Additional costs

Technical Rental equipment if needed. set p/day
Purchase of spool, SMB and wriste slate
TDI Extended Range Manual. 1500.00 THB
TDI certification fees 1500.00 THB

Equipment requirement

The Extended Range Diver course has uses a technical gear configuration. All students must own or purchase a spool, SMB and wrist slate. We supply the double tanks, decompression tanks and mixes, the decompression regulator and the oxygen analyser.

Got something to ask us ?

We are Technical diving education professionals and over the years we have been asked almost everything, feel free to look at our most commonly asked technical diving questions or contact us directly.