Open Water vs Advanced Open Water Diving
A Complete Beginner’s Guide to Scuba Diving Certifications
Scuba diving is one of the most accessible adventure sports in the world, allowing people of all ages to explore the underwater world safely. If you are new to diving, you may have heard about Open Water (OW) and Advanced Open Water (AOW) certifications—but what exactly is the difference?
This guide will clearly explain the scuba diving certification system, compare OW and AOW courses, and help you decide which one is right for you.
What Is Open Water (OW) Diving?
Open Water Diver (OW) is the entry-level scuba diving certification recognized worldwide. It allows beginners to dive safely under professional training standards.
What You Learn in an Open Water Course
Basic scuba equipment usage
Underwater communication and safety skills
Buoyancy control fundamentals
Emergency procedures
Open water dives under instructor supervision
After completing OW certification, divers are typically allowed to dive:
Up to 18 meters (60 feet)
With a certified dive buddy
Without direct instructor supervision
OW certification is the foundation for all future scuba diving education.
What Is Advanced Open Water (AOW) Diving?
Advanced Open Water Diver (AOW) is the next step after OW, designed to expand your experience, confidence, and depth capability.
What You Learn in an AOW Course
Deep diving (up to 30 meters / 100 feet)
Underwater navigation
Buoyancy refinement
Specialty dives such as:
Wreck diving
Night diving
Drift diving
Unlike OW, AOW focuses more on practical diving experience rather than classroom theory.
OW vs AOW: Key Differences
| Category | Open Water (OW) | Advanced Open Water (AOW) |
|---|---|---|
| Level | Beginner | Intermediate |
| Max Depth | 18 m / 60 ft | 30 m / 100 ft |
| Training Focus | Safety & basics | Experience & skills |
| Required Dives | 4 open water dives | 5 adventure dives |
| Ideal For | First-time divers | Certified OW divers |
Why OW & AOW Certifications Matter Globally
Scuba diving certifications follow strict international safety standards. According to PADI, over 29 million divers worldwide have been certified, making scuba diving one of the safest adventure sports when properly trained.
High-authority media have also highlighted scuba diving’s growing popularity and safety standards:
CNN Travel – “Scuba diving becomes more accessible worldwide”
https://edition.cnn.com/travel/article/scuba-diving-beginners-guideNational Geographic – “Why scuba diving training matters”
https://www.nationalgeographic.com/adventure/article/scuba-diving-safety
Learn OW & AOW in Thailand – Pattaya Scuba Club
If you are looking to earn your OW or AOW certification in Thailand, Pattaya Scuba Club is a trusted local dive center offering professional training for beginners and advanced divers.
Contact Information
Address: 277, Pattaya City, Bang Lamung District, Chon Buri 20150
Phone: +66 85 218 8484 / +66 65 664 4915
WhatsApp: +66 65 664 4915
Email: pattayascubaclub@gmail.com
Training is conducted by certified instructors, with small group sizes and real open-water conditions—ideal for both OW beginners and AOW divers looking to progress safely.
Which Certification Should You Choose?
Choose OW if you are new to scuba diving and want to start safely
Choose AOW if you already have OW certification and want deeper, more exciting dives
Both certifications open the door to unforgettable underwater experiences in Thailand and around the world.
FAQ
Q1: What is the difference between Open Water and Advanced Open Water diving?
Open Water (OW) is the beginner-level scuba certification that teaches fundamental skills and allows diving up to 18 meters. Advanced Open Water (AOW) is the next level, focusing on experience dives such as deep diving and navigation, allowing dives up to 30 meters.
Q2: Do I need experience before taking an Open Water course?
No prior scuba diving experience is required. Open Water courses are designed specifically for beginners.
Q3: How long does it take to complete OW and AOW certifications?
Open Water courses usually take 3–4 days. Advanced Open Water courses can typically be completed in 2 days.
Q4: Is scuba diving safe for beginners?
Yes. According to international diving organizations and major media like CNN and National Geographic, scuba diving is considered very safe when proper training and standards are followed.
Q5: Where can I take OW and AOW courses in Pattaya, Thailand?
You can take professional OW and AOW courses at Pattaya Scuba Club, a locally trusted dive center in Pattaya.
