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Operator page with site location, season, visibility, currents, certification and marine life.
Dive Spot Guide•
HTMS Hanhak Sattru 312, Wreck
Boat-access wreck on Koh Tao's east coast.
Local operator required
Boat access and wreck penetration are best handled with a local guide.
Sheltered Aow Mao Bay wreck for wreck-trained divers; boat access, light currents, and a clean profile make it a good progression site.
About HTMS Hanhak Sattru 312, Wreck
HTMS Hanhak Sattru 312 is a purpose-sunk Royal Thai Navy fast attack craft on Koh Tao's sheltered east side, resting upright in Aow Mao Bay near Laem Thian. The wreck sits on sand with a compact, readable profile and a clear bow, bridge and mast, making it a strong site for buoyancy practice, navigation, and controlled wreck exploration.
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Research Estimate At HTMS Hanhak Sattru 312, Wreck
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 15m
AccessSimple entry
CoralSome damage
Aquatic LifeGreat variety
FacilitiesBasic facilities
Crowd / PopularityModerate
CurrentLight current
SurgeLight surge
Where Is HTMS Hanhak Sattru 312, Wreck?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
HTMS Hanhak Sattru 312, Wreck Planning Details
Depth range, seasonality, and planning context.
Reported Depth
13m - 24m
Depth Note
Top of wreck around 13 m; lower sections sit in the low-20s.
Best Season
May to September
Typical Conditions
Sheltered east-coast wreck with light currents most days and roughly 10-20 m visibility; the bay mouth can feel a stronger tidal pulse, but it often stays workable when west-side sites rough up.
Safety & Access At HTMS Hanhak Sattru 312, Wreck
Site conditions, restrictions, and access requirements.
Site Conditions
Overhead environment
Safety Notes
Wreck dive with overhead sections; keep buoyancy tight and leave interior access to wreck-trained divers.
Access Restrictions
Boat access only; external exploration suits advanced divers, while interior penetration is for wreck-certified divers.
Legal Notes
Part of the underwater learning park and marine ecosystem rehab project; follow local wreck, buoyancy, and no-touch rules.
Local Intel For HTMS Hanhak Sattru 312, Wreck
Community notes to help plan your visit.
Scuba Diving
Boat-access wreck on sand with a clear bow, bridge and mast; the exterior is straightforward, but any interior work should be limited to wreck-trained divers.
Freediving
Not the primary use case; the wreck's depth and overhead sections make scuba the practical choice.
Snorkeling
Not a standard snorkel site; the wreck is better handled from a dive boat.
Wildlife at HTMS Hanhak Sattru 312, Wreck
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At HTMS Hanhak Sattru 312, Wreck
Community dive logs and visit reports for this site.
Dive Spot Log Averages At HTMS Hanhak Sattru 312, Wreck
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility15m
Activity
No dive activity logged yet.
