Egmont Islands (also known as Egmont Atoll, [1] or Six Iles) is an uninhabited atoll administered by the United Kingdom. They are one of the few emerged coral atolls that make up the Chagos Archipelago, British Indian Ocean Territory.
This small atoll lies less than 10km south of the southwestern rim of the Great Chagos Bank submerged coral reef. Its total size is 29km², [2] including the lagoon and the fringing coral reef. The land area totals about 4km². The nearest island is Danger Island on the Great Chagos Bank, less than 30km due north.
There are two passages into the lagoon along the Northern Rim, Fausse Passe in the northeast and a wider passage in the northwest. The Egmont Islands are one of the favorite anchoring spots for itinerant yachtsmen passing through the Chagos. [3]
The largest island is "Île Sud-Est" (Eastern Egmont), where the settlement was located, with an area of 1.5km². While "Île Lubine" is similar in size, the other islets are smaller. All islands are covered with coconut trees. The individual islands are all on the southern rim of the coral reef. They are, from southeast to northwest:
West of Ile aux Rats there was a small islet known as Ilot aux Rats (Islet with Rats)(Ile des Rats) which has now merged with Ile aux Rats. Ile Cipaye is also spelled 'Sipaille' and 'Cipaille'. Isle Carre Pate is also spelled 'Carpathe'. On some maritime charts Ile Takamaka is spelled as 'Tattamucca'.
Ile Sudest, the largest island, was first settled in the last half of the 18th century, at the time when the other atolls of the Chagos were settled by the French.
Commander Robert Moresby made a survey of this atoll and charted it in 1838. At that time there was a coconut plantation on this atoll. A causeway had been built linking the islands and some land reclamation was done. Eventually some of the islands merged with each other.
The Egmont Islands were no longer inhabited in the second half of the 20th century, at the time that the Chagossians or Ilois were evicted from the Chagos.
In 1972–73 there was an underwater expedition to the Egmont Islands by the Joint Services (JSEI). Led by Sqn Leader “Dickie” Bird RAF, it was the first expedition of its kind in the Chagos. Cdr Alan Baldwin RN was the Deputy Leader and the scientific work was carried out under the direction of Dr David Bellamy. [4] Its aim was to study coral reef formation and growth, as well as the islands' flora and fauna. [5] The expedition members were taken from Gan, Addu Atoll by RFA Gold Ranger to Egmont Atoll and after their survey was completed they were brought back to Gan by RFA Stromness. Following its success, a second expedition was undertaken to Danger Island the following year. [6]
The Coral Sea Islands Territory is an external territory of Australia which comprises a group of small and mostly uninhabited tropical islands and reefs in the Coral Sea, northeast of Queensland, Australia. The only inhabited island is Willis Island. The territory covers 780,000 km2 (301,160 sq mi), most of which is ocean, extending east and south from the outer edge of the Great Barrier Reef and includes Heralds Beacon Island, Osprey Reef, the Willis Group and fifteen other reef/island groups. Cato Island is the highest point in the Territory.
Diego Garcia is an island of the British Indian Ocean Territory, an overseas territory of the United Kingdom. It is a militarised atoll just south of the equator in the central Indian Ocean, and the largest of 60 small islands comprising the Chagos Archipelago. It was first discovered by Europeans and named by the Portuguese, settled by the French in the 1790s and transferred to British rule after the Napoleonic Wars. It was one of the "Dependencies" of the British Colony of Mauritius until the Chagos Islands were detached for inclusion in the newly created British Indian Ocean Territory (BIOT) in 1965.
An atoll, sometimes known as a coral atoll, is a ring-shaped coral reef, including a coral rim that encircles a lagoon partially or completely. There may be coral islands or cays on the rim.
RFA Gold Ranger (A130) was a fleet support tanker of the Royal Fleet Auxiliary which first served in World War II.
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Peros Banhos, Pedro dos Banhos or Baixos de Pêro dos Banhos in old maps, is a formerly inhabited atoll in the Chagos Archipelago of the British Indian Ocean Territory. Île Yeye, located at the northeastern corner of the atoll, is the island of the Chagos Archipelago that is closest to the Maldives.
The British Indian Ocean Territory (BIOT) is an archipelago of 55 islands in the Indian Ocean, located south of India. It is situated approximately halfway between Africa and Indonesia. The islands form a semicircular group with an open sea towards the east. The largest, Diego Garcia, is located at the southern extreme end. It measures 60 square kilometres (23 sq mi) and accounts for almost three-quarters of the total land area of the territory. Diego Garcia is the only inhabited island and is home to the joint UK-US naval support facility. Other islands within the archipelago include Danger Island, Three Brothers Islands, Nelson Island, and Peros Banhos, as well as the island groups of the Egmont Islands, Eagle Islands, and the Salomon Islands.
Saint Brandon, also known as the Cargados Carajos Shoals, is an Indian Ocean archipelago about 430 kilometres (270 mi) northeast of Mauritius consisting of a number of sand banks, shoals and islets. Saint Brandon consists of five island groups, with about 28–40 islands and islets in total, depending on seasonal storms and related sand movements. There are 22 named islands and shoals. The archipelago is low-lying and is prone to substantial submersion in severe weather. It has an aggregate land area estimated variously at 1.3 km2 (0.50 sq mi) and 500 acres (2.0 km2). Economic activity in the region is limited to fishing on the very extensive shallow bank covering approximately 900 sq mi (2,300 km2) around the islands. By the early 19th century, most of the islands were in use as fishing stations. Geographically, the archipelago is part of the Mascarene Islands and is situated on the Mascarene Plateau formed by the separation of the Mauritia microcontinent during the separation of India and Madagascar about 60 million years ago.
The Salomon Islands or Salomon Atoll is a small atoll of the Chagos Archipelago, British Indian Ocean Territory.
The Three Brothers are a group of three small coral islands 20 kilometres east of Eagle Islands along the central western rim of the Great Chagos Bank, which is the world's largest coral atoll structure, located in the Chagos Archipelago.
Eagle Islands is a group of two islands in the Chagos Archipelago. They are located on the central-western rim of the Great Chagos Bank, which is the world's largest coral atoll structure.
Danger Island is the westernmost and the southernmost island of the Great Chagos Bank, which is the world's largest coral atoll structure, located in the Chagos Archipelago in the Indian Ocean.
Nelsons Island or Nelson Island or Isle Legour is a small uninhabited island in the Great Chagos Bank, of the Chagos Archipelago in the Indian Ocean. As a protected nature reserve, access to the island is strictly restricted.
Cosmoledo Atoll is an atoll of the Aldabra Group and belongs to the Outer Islands of the Seychelles, and is located 1,029 km (639 mi) southwest of the capital, Victoria, on Mahé Island.
Blenheim Reef is a partly submerged atoll structure in the Chagos Archipelago, Indian Ocean. It includes the coral reef of Baxio Predassa in its southeastern rim, plus another completely submerged part. It is located in the northeastern part of the Chagos Archipelago. It measures almost eleven kilometres (north–south) by more than four kilometres (east–west), with a total area of 36.8 square kilometres, including the lagoon of 8.5 km², the difference being accounted for the mostly by the reef flat. Only on the eastern side, there are a few sand cays above the water. The largest of them is East Island, which is not quite 200 metres long and 70 metres wide. The other islands in the group are North, Middle and South. Only a few grasses grow on the island. The lagoon is up to 18 metres deep and encumbered with rock. The fringing coral reef has a wide passage in the southwest. The closest land is Takamaka Island in the Salomon Islands Atoll, about 20 kilometres to the southwest.
The Great Chagos Bank, in the Chagos Archipelago, about 500 km (310 mi) south of Maldives, is the largest atoll structure in the world, with a total area of 12,642 km2 (4,881 sq mi). The atoll is administered by the United Kingdom through the British Indian Ocean Territory (BIOT).
Pitt Bank is a wholly submerged atoll structure in the Southwest of the Chagos Archipelago. It is almost 56 km long Northwest to Southeast, with a width between 20 and 30 km. It stretches from 06°48'S to 07°16'S and 071°06'E to 071°36'E. The total size is 1317 km, making it the second largest ocean bank in the Chagos Archipelago, after the Great Chagos Bank, and before Speakers Bank. The closest land is Île Lubine of Egmont Atoll, located 22 km northeast off the northern end of Pitt Bank. The least depth is 7 metres at the Southeastern Rim, and the deepest areas of the former lagoon reach 44 metres.
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Coordinates: 6°40′S71°21′E / 6.667°S 71.350°E