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Dive theory, decoded
Plain-language explainers for the parts of the Divemaster and instructor theory exam that trip people up. Free to read. No agency jargon.
How to Calculate MOD for Nitrox
The formula, worked examples for EAN32 and EAN36, the round-down rule, and a quick-reference table.
Read the guideDive Physics Made Simple: The Gas Laws
Boyle, Charles, Dalton, and Henry in plain language, with what each one actually governs underwater.
Read the guideThe Divemaster Theory Exam
The five knowledge areas, the mistakes that cost people the pass, and a study plan that works.
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Free one-page cheat sheet, or the full 44-page guide with a 60-question practice exam.
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