Open Water Diver Independent Diver available on iOS, Android and via Web National Dive League: NDL enroll in the course, get your materials and start reading and watching the videos. As your Mark Scott’s Diving Vietnam Instructor I will schedule time with you to check your progress and make sure you understand important scuba diving information.Mark Scott’s Diving Vietnam Course is 3 Days and Includes 4 Boat Dives fee per Person is $399 usd in Nha Trang and $549 usd in Phu Quoc .