"There is a false sense of security amongst recreational divers that decompression is a well understood science and that decompression illness can easily be avoided if you stick to your decompression tables."
— Mark Powell, Deco for Divers
This is why we built these interactive lessons — to look beyond the tables and computers, and understand the science that powers them.
Topics
Sandbox
Interactive dive planner with real-time deco calculations. Edit profiles, visualize tissue loading and M-values.
Start HerePressure & Partial Pressure
Learn dive profile terminology and understand how ambient pressure changes with depth. Foundation for all decompression concepts.
AvailableTissue Loading & Saturation
Visualize how nitrogen dissolves into different tissue compartments during a dive and releases during ascent. Explore the Bühlmann ZH-L16 model.
AvailableM-Values & Surfacing Limits
Visualize maximum tolerated tissue pressures and how they define safe ascent limits for each compartment.
AvailableGradient Factors
Explore how GF Low and GF High settings add conservatism to your decompression schedule.
AvailableMulti-Gas Diving
See how switching to oxygen-rich gases during ascent accelerates decompression.
Coming SoonKnowledge Quizzes
Test your understanding with official CMAS/SPČR exam-style questions.
AvailableMore Topics
Additional educational content coming soon.
PlannedAbout This Project
This is an educational resource for divers who want to understand the science behind their dive computers. All visualizations are based on the Bühlmann ZH-L16 decompression model, one of the most widely used algorithms in recreational and technical diving.
These tools are for learning purposes only. Never use them for actual dive planning. Always rely on properly certified dive computers and tables for real-world diving.