
Master diver in the United States Navy ranks as the highest level of diving qualification one can attain in warfare. This enlisted person typically has the greatest knowledge, experience and training in all aspects of diving and underwater salvage. Master divers must have at least 15 years experience and have completed a specialization training course. In the United States Navy, you can earn your master diver status by taking a specialization course.
PADI Master Scuba Diver
PADI Master Scuba Diver certification scuba diving certification recognizes scuba diving expertise. The program is offered by several North American dive training agencies such as the National Association of Underwater Instructors and the Professional Association of Diving Instructors. This certification is considered the best available. You will be required to dive at least 30ft underwater while completing the course.

NAUI Master Scuba Diver
The NAUI Master Scuba Diver Course might be for you if your goal is to improve your scuba diving skills. This course will give you the knowledge and skills you need to organize dives with other divers. You will learn how to use a compass, perform underwater communications, and recognize pre-panic signs. Also, you'll learn how and where to dive. This course consists of both two open water and a classroom session.
NAUI Enriched Air (Nitrox) Diver
The NAUI Enriched air (NITX), Master Diver course will help you to improve your diving skills. This course will teach you how to mix Nitrox with oxygen, and many other aspects of enriched water diving. Students will learn to analyze the air mixture, how nitrogen and oxygen work together, and what hazards can be expected when handling each gas. Students will also learn how to calculate Equivalent Air Depth as well as common gas mixture techniques. An open water diver can also take the enriched course. It is a prerequisite for using the enriched mixture.
NAUI Rescue Scuba Diver
It is necessary to complete the required courses in order to fulfill your dream of becoming an NAUI Rescue Scuba Diver Master Diver instructor. This certification is a prerequisite for taking the NAUI FIT class, which prepares one to become a professional NAUI Instructor/Leader. To get started, take the Try Scuba program. This program aims to provide you with the necessary skills and knowledge to safely dive in open sea.

NAUI First Aid course
NAUI First Aid training for master divers will equip you with the skills to deal with a range of emergencies that can occur in water. Apart from refresher sessions, this course will provide valuable information regarding new First Aid standards as well training best practices. You will have the knowledge and skills to immediately respond to an emergency. You can also practice the skills you have learned in class by taking the course hands-on.