Regional dive operator page for Koh Waen and Koh Lanta conditions.
Boat-access train wreck reef in the Andaman Sea.
Boat-access train wreck reef in the Andaman Sea.
Koh Waen is a boat-access artificial reef in the Andaman Sea, best known for a sunken train, railway cars, and a locomotive covered in coral. The site mixes wreck structure, swim-throughs, and strong fish life, with schools of snapper and barracuda around the train and plenty of macro life in the cracks, tracks, and coral edges. It is the kind of dive where the wreck is the headline, but the small life keeps pulling your attention back to the details.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
5m - 30m
Depth Note
The artificial reef ranges from the shallow edges to the deeper train and swim-through sections at the site limit.
Best Season
November to April
Typical Conditions
Warm water, coral-covered train wreck, swim-throughs, strong macro life, schools of snapper and barracuda, and better visibility in the dry season.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Treat this as an advanced wreck-style dive with overhead sections, current awareness, and conservative gas planning.
Access Restrictions
Use a speed-boat operator and an advanced-level briefing; this is not a casual shore entry.
Legal Notes
Follow operator guidance for the artificial reef and respect depth and team rules on the wreck.
Community notes to help plan your visit.
Scuba Diving
Depths range from 5 to 30 m, with attractions including a sunken train artificial reef and swim-throughs.
Freediving
Not a freedive target; the wreck and swim-throughs belong to scuba only.
Snorkeling
Snorkeling is not the main use; the interesting structure sits below scuba depths.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Regional dive operator page for Koh Waen and Koh Lanta conditions.
Regional Trang season guide that includes Koh Waen conditions.
Independent page describing macro life and current conditions.
Operator page for the train wreck and advanced-level guidance.
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