How to Pass the Open Water Diver Exam
The Open Water Diver final exam is very passable with the right preparation. Here's exactly what to expect and how to study efficiently.
What's on the exam
The Open Water Diver final exam has 50 questions — mostly multiple choice, with a couple of ordering questions — and you need 75% to pass. It covers five areas: dive physics and pressure, physiology and safety, equipment, dive skills and the environment, and dive planning with tables and computers.
It is not a trick exam. Almost every question maps directly to something in your course materials, so the goal is comfortable familiarity, not memorization.
A study plan that actually works
Reading the manual cover to cover is the slowest way to prepare. The fastest is active recall: answer questions, see what you get wrong, and target those gaps. Here's the loop that works:
- Drill one topic at a time until you're consistently scoring above the pass mark on it.
- Take full, timed mock exams so exam day feels familiar, not stressful.
- Review every missed question — understanding why the right answer is right is what makes it stick.
- Practice in the language you think in, so you're testing your dive knowledge, not your translation.
Common mistakes to avoid
A few things trip up new divers more than the rest:
- Rushing the dive-planning questions — round depth and time up, and take your time.
- Confusing salt water and fresh water buoyancy and pressure.
- Guessing on ordering questions instead of thinking through the sequence.
Ready to practice? Take unlimited Open Water Diver practice exams with instant scoring and topic drills.