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Kees Beemster Leverenz

Kees Beemster Leverenz

Kees Beemster Leverenz

My favorite thing about diving is sharing what I see underwater with others. Sometimes that means taking pictures, but my favorite way to share is to teach people the skills they need to come with me. Being a Global Underwater Explorers instructor allows me the regular opportunity to help divers improve. I love teaching GUE Fundamentals in particular because I’m consistently impressed with how much people can improve with just a few days of focused effort. For me, there’s nothing more rewarding than helping someone become a more confident, capable, and safe diver.


  • Incident Communications and Coordination for Microsoft Office 365


  • University of Washington, B.S. Earth and Space Sciences (Geology), 2012

Diving Qualifications

  • GUE Instructor
  • GUE Tech 3
  • GUE Cave 2, Cave DPV, and Cave CCR
  • GUE CCR 2

Diving Experience

  • 1,800+ dives with hundreds of technical, cave, CCR, and DPV dives.

Community Involvement

  • Mars Makalös Exploration Project (Sweden) 2018 and 2019
  • Project Recover Expedition (Portugal, Croatia, and Italy) 2019
  • Red Sea Exploration Project (Egypt) 2019 and 2020
  • M/S Estonia Photogrammetry (Baltic Sea) 2022
  • Battle of the Convoys (Italy) 2022
  • Bikini Atoll Expedition 2023

Special interests

  • Underwater photography, videography, and photogrammetry


  • Coauthor of GUE Photogrammetry Diver
  • Contributing author for GUE Navigation Primer
  • Contributing editor for GUE Technical Diver 1 and Technical Diver 2 materials
  • Quest volume 18.1 - An Introduction to Underwater Photogrammetry
  • Quest volume 18.4 - Staying Warm in the Cold
  • Quest volume 19.3 - Photogrammetry: Photography for Engineers
  • Quest volume 20.1 - The PBM Mariner Project
  • Quest volume 22.3 - If the Fins Fit, Wear 'Em!
  • GUE InDepth Blog - Adventures in Picture Making - Photogrammetry and Lighting
  • GUE InDepth Blog - The Life & Times of a West Coast Photogrammetrist: Could it be the Almirante Barroso?

Languages I teach classes in

  • English

See Kees’s GUE profile here.

Seattle, Washington, United States

(206) 331-0526