Deep Diver Specialty on Koh Lanta se
Deep Diving on Koh Lanta
Are you tempted to go a little bit deeper on your dives? Do you want to explore shipwrecks, walls and canyons that lie beyond the limits of your current dive certification?


Here are 7 reason why you should take the SSI Deep Diver Specialty course here on Koh Lanta and get certified to dive to 40 metres:
1. Explore Deeper Dive Sites
Many intriguing dive sites, such as wrecks, walls, drop-offs, deeper reefs, and unique marine life habitats, are found at greater depths. A deep diver course allows you to safely explore these sites up to 40 metres (130 feet).
2. Safety and Skill Development
Diving at deeper depths requires a different set of skills to manage increased risks, such as nitrogen narcosis, increased air consumption, and longer decompression times. The course teaches you to handle these challenges confidently.
You’ll also gain experience in dive planning, gas management, and using a dive computer for deeper dives.
3. Increase Confidence and Experience
As you learn how to handle the specific conditions of deep diving, such as colder water, lower visibility, and changes in buoyancy, you’ll become a more capable and confident diver.
The course helps you expand your comfort zone and equips you to handle more demanding dives safely.
5. More Dive Travel Destinations
Once you’re certified to dive deeper, a whole new world of dive destinations opens up. From the wrecks of Chuuk Lagoon in Micronesia, Barracuda Point at Sipadan in Malaysia, or the iconic Blue Hole in Belize, there’s an endless list of bucket-list-worthy sites waiting for those with a Deep Diving Specialty certification.
6. Dive into History
Imagine exploring a sunken World War II wreck, or swimming through the remains of a long lost pirate ship. Many wrecks lie in deep water, making them off-limits to Open Water Divers, unless they’re certified as a Deep Diver.
7. Extend Bottom Time Safely
The course teaches how to maximise bottom time while managing air consumption and decompression limits, allowing you to explore more thoroughly while staying within safe limits.
Boka online och spara 10 % på dykresor och dykkurser på Koh Lanta.
Deep Diver Course Content
Deep Diving on Koh Lanta
The SSI Deep Diver course content here on Koh Lanta consists of knowledge development, followed by 3 open water Deep Diver training dives.
Deep Diver: Knowledge Development
Firstly, you will need to register with SSI and affiliate to Dive & Relax.
Once your booking is confirmed, we can release the course materials, which means you can complete the course theory and quizzes on the SSI App before you arrive on Koh Lanta.
You'll learn all about:
- Scuba Equipment for Deep Dives
- Deep Diving Limits
- Deep Dive Planning
- Altitude and Diving
- Pre-entry Procedures
- Descent Procedures
- Deep Diving Procedures
- Ascent Procedures
- Potential Hazards
- Diving Maladies
- Incident Management
- Repetitive Deep Diving
- Decompression Diving
Deep Diver: Open Water Dives
The practical part of the SSI Deep Diver Specialty course consists of 3 deep dives to a maximum of 40 metres, however since we do 2 dives per day on our boat trips, you will actually have 4 dives over a 2 day period, with the last dive being a fun dive.
The Deep Diver Specialty course dive schedule is:
During the Deep Diver course on Koh Lanta, you'll cover:
- Dive Planning
- Pre-dive Check
- Buoyancy Check at the Surface in Deep Water
- Controlled Descent
- Equipment Adjustment
- Neutral Buoyancy (Hovering)
- Underwater DSMB Deployment
- Controlled Ascent
- Safety Stop
- Surface Air Consumption Rate Check
You should have dived recently in order to take part in this course. If you have not dived for a while then you should do at least 1 day of Fun Diving to properly prepare yourself for the first day of deeper diving.
Due to the depths required for Dive 3, the second day of the course should be at Koh Haa, where several areas easily allow 40 metres depth.
We prefer to teach SSI courses, what's the difference between SSI and PADI?
Boka online och spara 10 % på dykresor och dykkurser på Koh Lanta.
SSI Deep Diver Specialty Price
Deep Diving on Koh Lanta
The price for the SSI Deep Diver Specialty course on Koh Lanta is ฿9,360 when booked online in advance (2 days, 4 dives).
- 4 Dives, up to 40 m
- FREE Online e-Learning
- FREE Equipment Rental
- FREE Dive Computer Rental
- 4 Dives, up to 40 m
- FREE Online e-Learning
- FREE Equipment Rental
- FREE Dive Computer Rental
- Open to all certified divers (SSI, PADI, BSAC, CMAS, etc.) at least 15 years old.
- Includes lunch and soft drinks on the boat.
- You must have proof of recent diving, or do 1 day Fun Diving before starting Deep Diving.
- Does not include Marine Park Diving Fee: Thai ฿240, Foreigner ฿600, per day.
See a complete list of all our Koh Lanta Diving Prices.
Boka online och spara 10 % på dykresor och dykkurser på Koh Lanta.
Scuba Courses Available on Koh Lanta
Learn to Dive on Koh Lanta
We teach a full range of SSI recreational scuba diving courses here on Koh Lanta, from the entry level Open Water Diver course all the way up to Diver Stress & Rescue, together with numerous specialty courses.
Är du redo att dyka?
Dykutflykter & dykkurser på Koh Lanta
Även om dykning är en mycket säker aktivitet är det viktigt att veta att du är i form för att dyka och att du inte har några fysiska eller medicinska tillstånd som kan öka risken för en olycka under vattnet.
- Ladda ner och läs Diver Medical Questionnaire.
Om du svarar 'ja' på någon av de medicinska frågorna, skriv ut hela blanketten och ta med den till din husläkare som kommer att bedöma din lämplighet för dykning. Din läkare kommer att fylla i sidan 3, som vi måste se innan du kan börja dyka.
Ta reda på mer med det brittiska forskningscentret för dykarsjukdomar.
Boka online och spara 10 % på dykresor och dykkurser på Koh Lanta.