TDI Extended Range

TDI Extended Range

As with many of the courses in the TDI training programme, this Extended Range programme serves to add more knowledge and skills to your diving development and leaves you qualified to take on more challenging and adventurous dives. The course will reinforce much of what has been looked at on previous TDI programmes, but will go into greater depth, as well as introducing some new concepts/ideas.

Why TDI Extended Range?

This course will provide the training and experience required to competently utilize air for dives up to 55 metres that require staged decompression, utilizing nitrox mixtures or oxygen during decompression. The object of the programme is to train divers in the proper techniques, equipment requirements, hazards of deep air diving to this depth.

Upcoming Courses (back to top)

No courses organised at the moment, please contact us to discuss your requirements.

How do I book myself on a course?

To book yourself on a course please select one of the courses above, send us a message, and we will get back to you to discuss further details.

Further information on TDI Extended Range (back to top)

What do I need to start?

TDI Extended Range Diver Manual/Workbook This course must be conducted using a twinset. Twinsets/regulators are available for hire for the duration of the course. In addition, there are a number of ancillary equipment items that are required for the course. Please contact us for full details. All of these can be hired for the duration of your training.

What will I do?

The course consists of a minimum of six hours of theory/knowledge development, accompanied by a minimum of four open water dives. All dives must be deeper than 30 metres, and two must be deeper than 40 metres.

Subject areas covered include:

Physics Review
Physiology Review
Formulas Review
Equipment Considerations
Dive table review
Dive computers
Dive Planning
Decompression Theory
Decompression gas choice
Ascent / Descent Techniques
Decompression stations types
Surface Support considerations

The open water dives will develop students:

Teamwork
situational awareness
buoyancy/trim
Managing multiple cylinders
narcosis management
stress analysis/mitigation
ascent/descent techniques
contingency deco plans
twinset shutdowns
SMB deployment/use
gas management

How long will it take?

The course requires three days to cover all required material.

The courses are usually scheduled to run over three consecutive days (Friday-Sunday).

Other scheduling options are available (i.e. over two weekends) but we strongly recommend the course is completed over the shortest period possible.

Please understand that the course is performance based. This means that certification is only awarded upon demonstration of being capable to conduct deep air decompression dives. This may involve further training dives beyond the four required.

What previous experience do I need?

To enrol on the course students must:

1. Be minimum age 18.
2. Have minimum certification TDI Advanced Nitrox and Decompression procedures or equivalent.
3. Show proof of 100 logged open water dives, of which 25 must be deeper than 30 metres.

What do the fees include?

All professional tuition Course Manual Insurance costs while on the course All registration fees with TDI upon completion. Use of Oxygen analyser. Use of dive planning software (various types)

What don't fees include?

Hire of any equipment Entry fee to dive site used for the Open Water dives (if applicable) Costs of transportation to and from dive sites (if applicable) Any personal costs (eg. food, drink, accommodation)

What can I do once I'm qualified?

Upon successful completion of this course, graduates may engage in decompression diving activities using air, up to a depth of 55 metres, without direct supervision provided:

1. The diving activities approximate those of training
2. The areas of activities approximate those of training
3. Environmental conditions approximate those of training

If in line with the students qualifications, nitrox mixtures may be used to accelerate the decompression.

What's next?

Upon successful completion of this course, graduates are qualified to enroll in:

1. TDI Entry Trimix Course
2. TDI Advanced Trimix Course