Explore Eastern Gulf

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

The scuba diving trial course is suitable for those with no prior diving experience and limited time, yet still looking to gain knowledge and have fun.

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Open Water Diver program! With this program, you can try a variety of specialties before committing to full specialty programs. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Open Water Diver Program, you will try out 5 different specialties. You will complete one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. With this trial program in specialty diving, you will have total freedom to explore. You can complete the full specialty programs any time in the future and credit your Advanced Open Water Diver training towards them. _____ April 22-23-24, 2022

As a Nitrox diver, you can increase your bottom times and safety margins, plus shorten your surface intervals - so you can spend more time diving and less time waiting! In this program, you will learn new skills and increase your diving knowledge whilst learning how to safely plan and dive with enriched air mixtures of up to 40% oxygen. Upon completion, you will earn an SSI Enriched Air Nitrox 32% or 40% certification.

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

Do you dream of travelling the world working as a scuba instructor? With this globally recognized certification, you can work at SSI Training Centers represented in over 130 countries. This in-depth program provides all you need to become an SSI Open Water Instructor. Once certified, you can train new SSI divers, teach Enriched Air Nitrox, Diver Stress & Rescue and create Dive Guides. The possibilities are endless, so start your dive career now!

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

The Instructor Evaluation (IE) is the final step of SSI’s 2-Step Instructor Training Approach Divemasters or equivalent-level professionals will have to successfully complete the Instructor Training Course (ITC) first where you’ll learn how to: • Conduct academic sessions • Lead confined water training • Teach Open Water Diver and various Specialty programs like Enriched Air Nitrox, Diver Stress&Rescue, Perfect Buoyancy and more • Develop student management and communication skills Already an experienced instructor with another agency? You may be eligible for shortened oboarding options where you will only have to complete certain parts of the Instructor Training Course (ITC) followed by passing an Instructor Evaluation (IE). Contact an SSI Training Center near you to learn more. Already certified as an Assistant Instructor with another agency? You could continue your professional journey with SSI. Get in touch with a local SSI Training Center to explore your options.

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

Dive Site: Koh Losin, west of Koh Lopi / Koh Losin, Losin Kong Nok, Tank, Train Dives: 11 dives