The Recreational Dive Planner provides the most conservative dive plan because it assumes you are at your maximum depth for the whole dive. Multilevel diving allows you to extend your no-decompression diving time by planning your dive in stages at progressively shallower depths.
In this course, you learn how to plan dives that extend your bottom time by crediting you for slower nitrogen absorption when you ascend to a shallower depth. That’s the way you really dive, after all.
You'll learn what multilevel diving is and why you want to plan for multilevel dives. You'll also get to see the various types of multilevel dive calculators (including dive computers), and learn about multilevel dive planning, organization, procedures, techniques and potential problems. You'll plan two multilevel dive profiles and then dive them with your PADI Instructor.