
Phuket · Thailand · Wreck · Artificial reef · Reef
Racha Yai Bay 1
Small wrecks and concrete cubes in one calm bay, with batfish in the hulls
Area photo: Jeanvenotella · CC BY-SA 4.0
Bay 1 is the sheltered bay on the east side of Racha Yai Island, dived by day boat from Phuket, with a cluster of small wrecks and concrete cubes lying inside it between 5 m and 25 m. The water off the white sandy beach is calm, the east coast carries minimal current, and the dive is a tour of the wrecks with batfish holding in the structures, an easy first taste of wreck diving.
Where it is and how deep
7.6086° N, 98.3786° EPublished position for this site.
The dive
Bay 1 sits on the east side of Racha Yai Island. The boat drops you inside the bay off a white sandy beach, where the water is calm and the current minimal, and the whole dive runs between 5 m and 25 m. New divers can stay in the bay at 5 m to 10 m; everyone else descends on the shallow end and works out towards the wrecks. Scubago lists three of them, Local Dive Thailand counts five small wrecks plus a field of concrete cubes placed after the 2010 bleaching, and their individual depths are not published, so let the guide set the order in which you visit them.
The wrecks and cubes are where the fish gather. Longfin batfish hold inside the structures, giant morays laze in full view, and the hiding places turn up frogfish, stonefish, snake eels and nudibranchs for anyone who looks closely. On the sand patches away from the structures there are garden eels, Kuhl's stingrays and a large school of barracuda, and a couple of motorbikes have been sunk for divers to pose with. With the shallow end at 5 m there is plenty of bottom time to finish on the reef in the shallows and do the safety stop over it before surfacing back at the boat.
The wreck
- Vessel
- Several small unnamed wrecks
- Type
- Small vessels sunk as artificial reefs
- Cause
- Placed as artificial reef structures; individual histories not published
- Lies
- Inside Bay 1 on the east side of Racha Yai Island, among concrete cubes, between 5 m and 25 m
Marine life and season
- Barracuda
- Stingrays
- Frogfish
- Nudibranchs
- Macro critters
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Prime | Prime | Prime | Prime | Good | Fair | Fair | Fair | Fair | Good | Prime | Prime |
Season follows Phuket: Calm, dry conditions mid-Oct to May; the May–Oct monsoon cuts clarity but Phuket's sites stay open, unlike the Similans (closed 16 May–15 Oct).
Know before you go
- The reef drops to about 25 m, deeper than an Open Water limit, so agree a maximum depth with the guide before descending to the deeper wrecks.
Questions divers ask
How deep is Racha Yai Bay 1?+
The bay runs between 5 m and 25 m, with the reef dropping to about 25 m in places. The wrecks lie within that range, but their individual depths are not published.
Is Racha Yai Bay 1 suitable for beginners?+
Yes. The bay is calm with minimal current and new divers can dive it at 5 m to 10 m, but the reef reaches 25 m, so newer divers should keep to the shallower wrecks with a guide.
How many wrecks are there in Racha Yai Bay 1?+
It depends who you ask: Scubago lists three, while Local Dive Thailand counts five small wrecks plus a field of concrete cubes placed as artificial reef after the 2010 bleaching.
Sources
- Racha Yai Bay 1 — Scubago
- Dive Sites for Day Trips: Where to dive around Racha Island — Scubacat Phuket
- Racha Yai: 5 Wrecks, A Maze of Cubes and some weird and wonderful critters — Local Dive Thailand
- Racha Yai Island dive sites — Sunrise Divers
More dive sites in Phuket
Pinnacle
Large schools of barracuda on an exposed pinnacle in strong current
Reef
Boulders and coral off Karon Beach, dived from the shore in mild current
A wreck at 8 m and a drift south down a slope that reaches 40 m
A 34 m barge lying open at 30 to 34 m off Racha Yai's east coast
Reef
A 3 to 12 m house reef off the beach for training, macro and night dives
Similar dives elsewhere
Upright navy wreck, superstructure at 18 m, keel at 30 m
The 27 m liveaboard Atlantis X, bow at 16 m
US-built landing ship, scuttled as an artificial reef in 2006
A freighter on her side at 30 metres, reached from the road



