HTMS Sattakut Wreck

HTMS Sattakut Wreck Diving Guide, Koh Tao

The HTMS Sattakut wreck is a meticulously prepared US Navy LCI (Landing Craft Infantry) 742, sunk intentionally in 2011 to create an artificial reef. This captivating site offers a fascinating dive experience, with a well-preserved wreck teeming with marine life, making it a highlight of diving in Koh Tao.

Dive Details

Depth & Visibility

• Typical depth range: 18-30 meters (60-100 feet)
• Average visibility: 10-20 meters (33-66 feet), can vary depending on weather and currents
• Water temperature (seasonal): 27-30°C (81-86°F) year-round

Difficulty

Difficulty level: Intermediate. The depth and potential for currents make it best suited for divers with some experience. Good buoyancy control is essential for a safe and enjoyable dive. Advanced Open Water certification is recommended.

Marine Life

The HTMS Sattakut is a vibrant artificial reef, home to a diverse array of marine life. Divers can expect to see large schools of yellowtail barracuda, snappers, fusiliers, and batfish congregating around the wreck. Keep an eye out for groupers, moray eels, nudibranchs, and various species of crustaceans. The wreck’s structure also provides shelter for smaller fish and invertebrates, creating a bustling underwater ecosystem. Occasionally, whale sharks and other pelagic species can be spotted in the vicinity.

Best Time to Visit

The best time to dive the HTMS Sattakut is generally from March to September. During these months, the visibility is typically at its best, and the weather is more stable. The southwest monsoon season (October to December) can bring rougher seas and reduced visibility, although diving is still possible on calmer days. January and February can also be good, but may have slightly cooler water temperatures.

What Makes It Special

The HTMS Sattakut stands out due to its excellent condition and accessibility. Unlike many wrecks, it was carefully prepared before sinking, making it safe for divers to explore. The wreck sits upright on the sandy bottom, allowing easy navigation around its exterior and penetration for certified wreck divers. The rapid colonization by marine life has transformed the wreck into a thriving artificial reef, making it a truly unique and rewarding dive site.

Practical Tips

Before diving the HTMS Sattakut, consider the following:

• Check the current conditions with your dive operator. Currents can sometimes be strong, requiring extra caution.
• Ensure you have good buoyancy control to avoid stirring up the silt and reducing visibility for other divers.
• If you plan to penetrate the wreck, you must have appropriate training and equipment (e.g., a dive light and reel).
• Respect the marine environment. Avoid touching or damaging the wreck or any marine life.
• Use reef-safe sunscreen to protect the delicate coral and marine ecosystems.