Explorer 30 - Advanced

with Hydronauts


Ready to advance your diving abilities? If you’re a certified Open Water diver, the Explorer 30 – Advanced is the next step to becoming an advanced scuba diver. 

This scuba diving course will help you advance your buoyancy skills and in water abilities. By completing the advanced course, you’ll also be certified to dive to depths of 30 meters and learn a few advanced diving specialty skills. 

The Explorer 30 – Advanced course consists of 3 mandatory dives (Buoyancy Dive, Navigation Dive & Deep Dive (to 30 meters)) along with 2 electives of your choice from these options: Night Dive, Shipwreck Dive, Photography Dive, Search & Recovery Dive, or Underwater Naturalist Dive.

The Explorer 30 – Advanced course is generally completed in 24 hours and certifies you to dive anywhere in the world to 30 meters!

10,000 THB



Must be a minimum of 15 years old.

Must be a certified Open Water diver. 

Must have a minimum of 4 hours logged underwater in an Open Water environment.

Step 1 -
Online Study

Begin your e-learning before you arrive.

Your training starts online where you will access all your RAID training manuals and quizzes. Contact us to get started with your e-learning!

Step 2 -
Theory & Workshops

On arrival, you’ll meet your instructor who will review your pre-completed e-learning with you.

Your instructor will then conduct a few workshops with you as you prepare for your Open Water dives.

Step 3 -
Open Water Dives

Depending on the electives you choose in your Explorer 30 course, you’ll begin with the Buoyancy and Navigation dives, where you will increase your mastery of hovering, fin & propulsion techniques, and spatial awareness. You’ll learn how to navigate around dive sites using a compass and natural queues to pinpoint places of interest and be able to get back to the boat.

You’ll have a break in the afternoon and meet up again around sunset to prepare for a night dive. Your instructor will teach you about communication underwater via a torch and Night dive safety precautions. On the dive, you’ll observe completely different marine life and activity from your day dives.

The next morning’s deep dive will take you down to 30 meters where you’ll learn about the extra considerations involved with deep diving. The second dive of the morning will have you discovering the HTMS Sattakut Shipwreck, a veteran of the Battles of Iwo Jima and Okinawa!

Search and recovery dives elaborate further on navigation and introduce rigging and raising heavy objects.

The Underwater Naturalist dive is perfect if you’re curious to learn about marine ecology, tropical reef systems, and learning to name and identify fish.


Why choose Hydronauts?

RAID Instructors

Our experienced instructors are hand-picked, highly trained and passionate about diving. We tailor each course and dive to your unique needs.

Top-Notch Facilities

Hone your skills in our training pool built for divers and giant stride off of our beloved, two-story dive boat.

Free Digital Logbook

Keep track of your adventures, dive buddies and training with the free RAID digital logbook. Access your dive memories for life.

State-of-the-Art Equipment

We choose to dive and teach in Backplate & Wing BCD with a Long-hose, Short-hose regulator configuration favored by technical divers.

Dive Anywhere in the World

Upon completion of your RAID Course, you will be issued with an e-certification card which recognizes you as an internationally certified diver.

Low Carbon Footprint

We make every effort to reduce our footprint and use of paper and plastic. All our course materials are hosted online giving you access for life.

Reserve your space now


You must wait 18 hours after your last dive before flying in an aircraft.

Need a place to stay? We’re a beachfront diving resort! We offer rooms from single-gender to mixed dorms, queen rooms, family rooms, and bungalows for weekly or monthly rent! You can book a room here

Please stay hydrated – drink lots of water before and after your dives.

Bring sunscreen (preferably reef safe!)


Have another questions? Reach out to us!

Yes! We are a 3-star beachfront resort! We have dorm rooms starting at 300 THB and private accommodation starting at 600 THB. Message us and ask about our diving and accommodation packages! 

Yes! You can begin your reading and quizzes before you get here but you’ll need to complete the workshops and exams with your instructor when you arrive. Contact us now to get started! 

Explorer 30 or Advanced 35 are the next courses we recommend after your Open Water 20 Course. These courses will get you to improve your buoyancy, advance your understanding of dive planning, and get you diving on shipwrecks, deep sites, and maybe even diving at night! Get in touch with us to learn more! 

Yes. All the answers are in the manuals for you to review anytime. Our approach to education is for students to comprehend and practice through repetition rather than focusing on textbook memorization. This ensures that your actions–underwater especially–are informed and contextual rather than rote and textbook. 

Yes! Check our Try Dive page or get in touch with us to learn more! We can’t wait to show you the underwater world and teach you to defy gravity!