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Great Basses Reef lighthouse drift diving: March-April inter-monsoon sea state window?

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J
Jens Wreck•925 rep

What are the nautical logistics and naval permits required to dive the Great and Little Basses reefs off Kirinda, and what is the exact operational weather window?

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4 Answers from travellers

✓Accepted Answer

The Basses Reefs are accessible strictly during the short inter-monsoon window between late February and mid-April, when ocean conditions drop to glass-calm. During the rest of the year, massive Indian Ocean swells break over the shallow sandstone ridges. Operations launch from Kirinda fishing harbor with daily manifests logged through the Sri Lanka Coast Guard. Strong, unpredictable drift currents (often exceeding 4 knots) necessitate experienced boat cover, surface marker buoys on all divers, and conservative profiles.

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S
Suren Diver•1840 rep

Arthur C. Clarke’s famous 18th-century silver coin wreck site is protected under heritage statutes; removing artifacts, brass fittings, or ballast stones is strictly prohibited and heavily policed.

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J
Jens Wreck•925 rep

Pelagic life is dramatic here: large aggregations of grey reef sharks, giant trevally, and manta rays patrol the surge channels dissecting the lighthouse base.

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A
Anouk•1880 rep

Stepping ashore onto the operational lighthouse platform itself requires formal clearance from the Sri Lanka Ports Authority lighthouse division.

12
C
Capt Jayasuriya•1790 rep

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