| 1. | The attack was directed at vessels in the natural harbour at Kilbotn.
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| 2. | The fort overlooks the natural harbours of Tobar Fuar and Port Lobh.
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| 3. | Sierra Leone is home to the third-largest natural harbour in the world.
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| 4. | The peninsula embraces a bay and a natural harbour in the southwest.
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| 5. | There is a natural harbour on the west side of the island.
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| 6. | The importance of Fort Fredrick was due to Trincomalee's natural harbour.
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| 7. | It is one of the world's larger natural harbours, covering 14 square miles.
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| 8. | Two natural harbours are found in the Gulf, Port Warrender and Walmesly Bay.
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| 9. | The natural harbour of Willemstad proved to be an ideal spot for trade.
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| 10. | The events take place around the natural harbour of the Gulf of Morbihan.
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