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Koh Lanta Nitrox Course

More Oxygen, Less Nitrogen, Less Tired

Feel less tired after diving

Learn to dive with more oxygen and less nitrogen in your tank, with the SSI Enriched Air Nitrox course here on Koh Lanta.

During your Open Water Diver Course, you learned some of the limits of diving on normal air, and how nitrogen affects the body when we go scuba diving.

During our dives, nitrogen is absorbed into our body tissues and this limits our diving depth and time. As you learned in your Open Water Course, too much Nitrogen can be a bad thing.

Diving @ Hin Muang from Koh Lanta with Dive & Relax

Enriched Air gas mixtures contain more oxygen and less nitrogen which means that during a dive, our tissues are exposed to a lower partial pressure of nitrogen. This lower nitrogen partial pressure results in less nitrogen being absorbed by the body during a dive.

As part of your course, you will have 2 dives on 32% Enriched Air Nitrox, that is approximately 32% oxygen and 68% nitrogen.

Many Nitrox divers also claim to feel much less tired after diving on Nitrox, and for those of you who are feeling a little less fit than you used to be, less nitrogen in your body can only be a good thing - especially if you're planning several days diving here on Koh Lanta.

Find out more on Enriched Air Nitrox diving.

How long does the SSI Nitrox Course take on Koh Lanta?

The Nitrox theory typically takes 1 - 2 hours and is completed the day before your Nitrox dives.

On the morning of your dives, you will analyse your two Nitrox tanks before the boat departs Koh Lanta.

Day 1
Check-in with us at our dive shop @ Lanta Castaway Beach Resort between 10 am and 12 noon to complete the paperwork, diver medical, check equipment sizes, and receive the self-study materials.
1 - 2 hours self-study with the online SSI materials at your resort or on the beach. Review theory with your instructor.
Day 2
Tank testing followed by two dives on 32% Enriched Air Nitrox.
Course Final Exam, process your SSI Enriched Air Nitrox certification.

During your course, you'll also learn how to use a Nitrox diving computer, how to set and check the computer. If you don't have your own Nitrox dive computer, we'll give you one to use during the course for free.

Dive Course Online Price Walk-In Price
SSI Enriched Air Nitrox(1.5 days, 2 dives) ฿6,750 ฿7,500
  • Includes digital materials, free equipment rental, lunch and soft drinks on the boat.
  • Includes 2 Tanks 32% Nitrox & Free Dive Computer Rental
  • Additonal ฿800 Fuel Surcharge for dives to Hin Daeng & Hin Muang or Shark Point & Anemone Reef.
  • Does not include Marine Park Diving Fee: Adult ฿600 per day.

Scuba Courses Available on Koh Lanta

Are you Fit to Dive?

Whilst scuba diving is a very safe activity, it is important to know that you are fit to dive and that you do not have any fitness or medical conditions that could increase your risk of an accident underwater.

If you answer 'yes' to any of the medical questions, please print the entire form and take to your family doctor who will assess your fitness to dive and issue a medical statement which we must see before you start diving.

Find out more with the UK based Diving Diseases Research Centre.

Book online to save 10% on dive trips and scuba courses on Koh Lanta.


Dive Trips & Scuba Courses

Send us an email and we'll get back to you as soon as possible.

  • Please let us know:

    • when will you arrive on Koh Lanta?
    • your previous dive experience?
    • which diving activities you are interesed in?
  • If you're already here on Lanta, you can call or WhatsApp +66 (0)89 050 3009