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Nitrox Diving Specialty Course

Experience increased safety and longer bottom times with Enriched Air Nitrox.

Your Nitrox certification is good world-wide!

Class Info

Nitrox is Oxygen Enriched Air. The gas is ultra-purified, making it much cleaner than compressed air. The result is a breathing gas that is 50 times cleaner than conventional SCUBA compressed air (ever taste oil vapors in your air?).


The major benefit from breathing Nitrox while diving comes from the decrease in nitrogen in your breathing gas. As us divers know, nitrogen is the main culprit behind decompression sickness and nitrogen narcosis. By breathing a gas with less nitrogen (and more oxygen) a diver can expect to have a much larger safety margin, and many other benefits, such as:

  • less nitrogen narcosis

  • less post-dive fatigue

  • extended no-decompression limits, sometimes as much as two to three Repetitive Groups

Many divers even report being warmer on their Pacific Northwest dives!

Silent World has been involved with Nitrox since 1990; we were one of the first dive operators in the state to offer Nitrox. We have the experience and service to help you get involved with this new boon to safer diving.


​Open Water/Beginner Class or equivalent

   (Nitrox course can be taken in

   conjunction with Open Water course)


Age 12 recommended.


Medically cleared for Diving.

Next Class:

What's Included

Mar - 26th

We schedule these one-on-one all the time, email us to set your course up!


2010 - present

  • Books, materials, and certification card
  • class session with instructor

2010 - present

Course Cost, including Online materials & c-card: $150 + tax (contact us for code)

Call the store at 425-747-8842 or E-mail an instructor with any questions, to sign up, or to discuss private instruction.
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