Rebreathers !

At A Glance

REBREATHERS are the HOTTEST Thing to come along for divers in A LONG TIME!!!

Classes are starting regularly. Contact Craig at to arrange your training.


Prerequisites EXPLORER (eSCR)

- 15 years old

- 25 logged dives

- Nitrox certification (can be combined with Explorer      training)


        Next Class starting October 10th


Prerequisites CCR (Prism2, KISS (closed circuit rebreather):
- Minimum 50 logged dives.

- Nitrox & Adv. OW certification. (These courses can be   combined with ccr training)




Silent World is the largest and most experienced rebreather dealer in the Pacific Northwest. We have been Training, selling and servicing rebreathers for over 17 years!  Go with Experience!

Instructor Craig Willemsen, has been diving and teaching rebreather divers since the late 1990's. Craig has over 2500 logged rebreather dives all over the world, come learn from one of the best!

Why all the training? Our goal is to have you "over-learn" the basics so you are completely comfortable with your rebreather. We go over and above the minimum training standards required by the certifying authorities.

AND we offer rebreather-friendly dive trips for like-minded rebreather divers. See why we have rebreathers users from all over the country diving with us!


Wondering whether rebreathers are the next logical step for you? Read On...















                                             EXPLORER Rebreather Pool Demo!


Dive the latest in Rebreather technologies, the Hollis EXPLORER Rebreather!  A short class presentation followed by a Pool dive giving you the feeling of what its all about.  $75 fully credited towards a future Rebreather course email for our next Demo!




                               WHY DIVE A REBREATHER???

Deco Efficiency

Imagine diving for 60 minutes at 100 feet with no decompression time. Or 90 minutes at 65 feet. Or two hours or even four hours at shallower depths. Rebreathers reduce the nitrogen out of the air you breathe, reducing significantly your nitrogen load that leads to decompression diving, longer surface intervals, and, at worst, decompression sickness.  Your exhaled gas isn't released into the surrounding water. This means you aren't venting bubbles. Loud bubbles. Clouds of bubbles. This means you are diving silently. That silence, and the lack of scary random bubble clouds, allows you to get eye to eye with shy marine life that would usually hide upon hearing you. Most professional dive photographers are using rebreathers.


More Time Underwater!

Than regular Scuba gear! For example, with an Explorer, you'll carry 3-4 hours of breathing gas for just about any depth (based on the nitrox mix). This means you have hours and hours of time underwater, if you want it! For Closed circuit unit, it can upwards of 6+ hours!!!

A Silent World

Because your exhaled gas isn't released into the surrounding water, you make no bubbles. No noisy bubbles. No clouds of bubbles to get in your viewfinder while you snap a picture of that elusive splendid toad fish. In other words: no holding your breath while you wait for that drum fish to just stop spinning so you can take its picture. A truly more SILENT WORLD (Hey that's the name of the store???!!)

Additional Warmth while Diving

The air you breathe with a rebreather is warm and moist, rather than cold and dry on open circuit. This keeps you warmer throughout your dive (your body doesn't have to expend energy to heat the air you breathe) and prevents dry cotton mouth.

Lighter Weight

Less Weight to Carry Around  Because a rebreather replaces the standard scuba cylinder(s) and BC, it is much lighter than an equivalent amount of cylinders required for open circuit setup.


Silent World only offers rebreathers with a proven safety track record. We only offer rebreathers that are built by companies with excellent long-term reputations.


You really can interact with more underwater critters because you're diving truly silent.

More Rebreather Information:

A Learner's Guide to Closed-Circuit Rebreathers: Richard Pyle's seminal article. Everything you wanted to know about closed-circuit rebreathers.

Rebreathers-101: October 2011 article from X-Ray Magazine


Rebreathers-Are they for me?  April 2013 article  from SDI/TDI (Great Read!)

Rebreather Manuals



PRISM2 manual


KISS Rebreathers


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Call the store at 425-747-8842 or e-mail an instructor to sign up for a lesson or discuss private instruction.