HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Immerse yourself in approximately 23m of crystal-clear water, a mere 60m north of Laem Thian. The ship's mast reaches a depth of approximately 13m. This impressive wreck shares the same ship class as the HTMS Suphairin 313, which rests peacefully in the enchanting No Name Bay.
Delight in the intricate details of this sunken vessel, featuring a formidable 20mm anti-aircraft cannon at the bow and a reliable 50-caliber machine gun at the stern. For those with proper training and experience, the wreck has been carefully scuttled to allow for safe penetration.
With a visibility of 14m and a maximum depth of 21m, this dive site promises an unforgettable adventure for both beginner and advanced divers. Located in the breathtaking Surat Thani Province, Thailand, the site is conveniently close to Sathicq's Abandoned Hotel, The Place Hill, Baan Haad Sai Ree, Surat Thani Province, 84360, Thailand.
Embark on a thrilling underwater exploration at this remarkable dive site and create memories that will last a lifetime. Whether you seek adrenaline-fueled dives or serene underwater vistas, this destination has something special to offer divers of all levels.
Diving Conditions Score for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Depth
21m
Visibility
14m
Experience Level
Weather Conditions for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Wave Height
0.24m
Wind Speed
16.7 m/s
Water Temp
30.7°C
Visibility
31.18km
Cloud Cover
100%
Wave Period
2.25s
Air Temperature
28.9°C
Precipitation
0 mm
Dive Score Chart for HTMS Hanhak Sattru 312, Wreck
Best time to dive: 9:00 with score 8.675942424242425/10. Water conditions: Waves 0.08m, Wind 5.1 m/s.Best night dive time: 5:00 with score 7.645880952380952/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at HTMS Hanhak Sattru 312, Wreck are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Score: 8.7/10
Waves: 0.08m (2.2s), Wind: 5.1 m/s
Score: 7.6/10
Waves: 0.12m, Wind: 9.9 m/s
Seasonal Analysis for HTMS Hanhak Sattru 312, Wreck, Koh Tao in ThailandAlpha
Historical patterns and best seasons for diving at HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Ideal Conditions for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
Water Temp
27.2°C / 81.0°F
August
Visibility
11.5m / 37.7ft
March
Wave Height
1.6m / 5.2ft
March
Wave Period
8.0s
January
Seasonal Insights for HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand
HTMS Hanhak Sattru 312, Wreck, Koh Tao in Thailand shows typical northern hemisphere patterns with June being the warmest month (28.4°C) and December the coldest (23.0°C). The calmest conditions typically occur in March with average wave heights of 1.6m and wave periods of 8.0s. The most comfortable wave conditions are in March with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.2mm of precipitation. For beginners, the best time to visit would be during March to May, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 1 min. ago - Jun 17, 2026