Be the scuba diver everyone wants to follow because you know where you are and where you're going. The PADI Underwater Navigator course fine-tunes your observation skills and teaches you to more accurately use your compass underwater. If you like challenges with big rewards, take this course and have fun finding your way. If you're a PADI (Junior) Open Water Diver who is at least 10 years old, you can enroll in the PADI Underwater Navigator Specialty course.