The Gambia less than wide at its widest point, with a total area of . About (11.5%) of the Gambia's area are covered by water. It is the smallest country on the African mainland. In comparative terms, the Gambia has a total area slightly less than that of the island of Jamaica. Senegal surrounds the Gambia on three sides, with of coastline on the Atlantic Ocean marking its western extremity. The present boundaries were defined in 1889 after an agreement between the United Kingdom and France. During the negotiations between the French and the British in Paris, the French initially gave the
Transport in the Gambia excellent condition. The Gambia River not only provides important internal transport but is also an international commercial link. Oceangoing vessels can travel 240 km upstream. In 2004 there were 390 km of total waterways. Banjul, the principal port, receives about 300 ships annually. Ferries operate across the river and between Banjul and Barra. With the construction of major all-weather roads on both sides of the Gambia River, the waterway has become less significant for passenger traffic. Waterways: 390 km (small ocean-going vessels can reach 190 km) (2008) <br>"country comparison to the world:" 90 Ports and harbours: Banjul, Gambia Ports Authority