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Funafuti is the capital of the island nation of Tuvalu. It has a population of 6,320 people, and so it has more people than the rest of Tuvalu combined, with approximately 60% of the population. It consists of a narrow sweep of land between 20 and 400 metres wide, encircling a large lagoon 18 km long and 14 km wide. The average depth of the Funafuti lagoon is about 20 fathoms. With a surface area of 275 square kilometres (106.2 sq mi), it is by far the largest lagoon in Tuvalu. The land area of the 33 islets around the atoll of Funafuti totals 2.4 square kilometres (0.9 sq mi); taken together, they constitute less than one percent of the total area of the atoll. Cargo ships can enter Funafuti's lagoon and dock at the port facilities on Fongafale.