Koh Yao Yai
Ko Yao Yai · Big Long Island
7°58.0'N 98°37.0'E
Depth
3–12m
Bottom
sand
Alarm Radius
75m
Holding
Good
Recommended Anchor Alarm Radius
75m
Set 75m radius off the west coast bays. Best anchorage is in the bays on the western side of the island. Tidal range 2–3m — set scope accordingly.
About This Anchorage
Koh Yao Yai (Big Long Island) lies between Phuket and Phang Nga Bay, offering a quieter alternative to the busier Phuket anchorages. The island is predominantly Muslim with a traditional fishing culture. Several sandy bays on the western coast offer good anchorage in the NE monsoon. The island is relatively undeveloped with mangroves, rice paddies, and rubber plantations. Excellent base for exploring Phang Nga Bay.
Protected From
W · NW · N
Exposed To
E · SE
Anchoring Rules
- Anchoring fee
- Free
- Permit required
- No
Restrictions: Respect the local Muslim culture — conservative dress when ashore. Ask permission before photography.
Hazards
- !Fish farms and oyster lines in bays — navigate carefully
- !Submerged rocks near headlands — approach with caution
- !Tidal range 2–3m — shallow areas exposed at low tide
Skipper's Tips
- →Anchor off the fishing village on the western coast for the most sheltered spot
- →Rent a motorbike to explore the island interior — beautiful scenery
- →Fresh seafood from local restaurants is exceptional and inexpensive
- →Be respectful of the Muslim community — conservative dress ashore
Facilities
Local restaurants in the fishing village; excellent fresh seafood
Nearest provisions: Koh Yao Yai village (1nm)
Best Months & Season
November, December, January, February, March, April
NE monsoon season (November–April). The western anchorages are exposed to E/SE in SW monsoon. Phang Nga Bay side (east coast) is more protected year-round.
Recommended Anchor Types
Nearby Anchorages
Set Your Anchor Alarm to 75m
In Phuket and Phang Nga Bay, the 2–3m Andaman tidal range means your boat's position changes dramatically with the tide. Safety Anchor Alarm monitors your GPS position continuously so you can explore the hongs, beaches, and karst formations with complete peace of mind.
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