divehappy.com · Tourism
Similan guide with bay access, wreck depth, and seasonal context.
Dive Spot Guide•
Tuna Wreck
Deep Similan wreck-and-reef dive off Island 5.
Local operator required
Typically dived by liveaboard boats in the Similan season.
Plan for a liveaboard wreck dive in a sheltered bay with rope descent, deep profiles, and a coral-rich reef nearby.
About Tuna Wreck
Off Island 5 in the Similan Islands, Tuna Wreck is a deep artificial reef created from a deliberately sunk trawler. It is usually dived by liveaboard boats on a rope descent into a sheltered bay, then explored as a wreck-and-reef combination with soft corals, gorgonians, glassfish, and schooling reef fish. The site is a careful deep dive rather than a casual shallow stop, but it rewards slow, controlled passes and good buoyancy.
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Research Estimate At Tuna Wreck
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 20m
AccessChallenging entry effort
CoralPristine, vibrant coral
Aquatic LifeGreat variety
FacilitiesLimited facilities
Crowd / PopularityQuite busy
CurrentNo current
SurgeFlat calm
Where Is Tuna Wreck?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Tuna Wreck Planning Details
Depth range, seasonality, and planning context.
Reported Depth
28m - 40m
Depth Note
The wreck sits on the bay slope, with the shallowest part around 28 m and the sand near 40 m.
Best Season
October to May, when the Similan Marine National Park is open.
Typical Conditions
Liveaboard boat entry, calm bay water, a rope descent to the wreck, and a coral-rich reef adjacent to the site.
Safety & Access At Tuna Wreck
Hazards, restrictions, and access requirements.
Key Hazards
Restricted access
Safety Notes
Watch your depth and NDLs on the descent and around the wreck. This is a deep profile that should be dived conservatively.
Access Restrictions
Seasonal park access applies, and the site is typically dived from liveaboard boats.
Legal Notes
The Similan Marine National Park closes from mid-May to mid-October each year.
Local Intel For Tuna Wreck
Community notes to help plan your visit.
Scuba Diving
Deep wreck dive on a deliberately sunk trawler in a sheltered bay.
Freediving
Not a freedive site; the wreck sits too deep for typical freediving.
Snorkeling
Not suitable for snorkeling on the wreck itself; the surrounding bay has shallower reef water.
Wildlife at Tuna Wreck
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Tuna Wreck
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Tuna Wreck
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility20m
Activity
No dive activity logged yet.
