PADI Open Water Diver Course PADI Open Water Diver Course This is a four day course, consisting of reading the PADI Open Water manual, completing the included knowledge reviews, watching a DVD that complements the manual, four quizzes and an exam, confined/pool water skills practice, and four open water dives (in the ocean). This is the first level in PADI certifications, after completing this course you will be certified to dive to a depth of 18 meters/60 feet without supervision.