Thurston Island is an ice-covered, glacially dissected island, 215 km (134 mi) long, 90 km (56 mi) wide and 15,700 km2 (6,062 sq mi) in area, lying a short way off the northwest end of Ellsworth Land, Antarctica. It is the third largest island of Antarctica, after Alexander Island and Berkner Island.
Visokoi Island is an uninhabited island in the Traversay Islands group of the South Sandwich Islands. It was discovered in 1819 by a Russian expedition under Fabian Gottlieb von Bellingshausen, who initially named the island Thorson Island in honor of Lieutenant Konstantin Thorson, though the tsarist government later renamed the island Visokoi ("high"), after its conspicuous height, in response to Thorson's participation in the Decembrist revolt. The island was surveyed in 1930 by Discovery Investigations (DI) personnel, who charted and named many of its features. Several of the names given by DI were changed in 1953 by the United Kingdom Antarctic Place-Names Committee (UK-APC) to avoid redundancy with nearby features.
Adelaide Island is a large, mainly ice-covered island, 139 kilometres (75 nmi) long and 37 kilometres (20 nmi) wide, lying at the north side of Marguerite Bay off the west coast of the Antarctic Peninsula. The Ginger Islands lie off the southern end. Mount Bodys is the easternmost mountain on Adelaide Island, rising to over 1,220 m. The island lies within the Argentine, British and Chilean Antarctic claims.
The Willis Islands are a small archipelago to the west of South Georgia Island in the South Georgia Islands. They are 2 miles (3.2 km) west of Bird Island, separated by the Stewart Strait. They were discovered on 14 January 1775 by Captain James Cook and named for Cook's midshipman Thomas Willis, the crew member who first sighted them. The Willis Islands were charted in greater detail and individually named by Discovery Investigations (DI) personnel between 1926-1930.
The Curzon Islands are a small group of rocky islands lying close off Cape Découverte, Adélie Coast. They were probably sighted in January 1840 by a French expedition under Captain Jules Dumont d'Urville, though not identified as islands on d'Urville's maps. The islands were roughly charted in 1912 by Captain J.K. Davis of the Australasian Antarctic Expedition ship Aurora and named by Mawson for Lord Curzon, the President of the Royal Geographical Society, 1911–14. The islands were mapped in detail by the French Antarctic Expedition, 1950–52.
The Amiot Islands are two groups of islands and rocks, the Ward Islands and Cumbers Reef, respectively, lying 17 kilometres (9 nmi) west of Cape Adriasola, Adelaide Island, Antarctica. They were discovered by the French Antarctic Expedition, 1908–10, and were named by Jean-Baptiste Charcot for A. Amiot, engineering director of the French Montevideo Co., Montevideo, Uruguay, which made repairs on the ship Pourquoi-Pas. The islands were more accurately charted by the British Royal Navy Hydrographic Survey Unit in 1963.
Case Island is a roughly circular ice-covered island, 22 kilometres (12 nmi) in diameter, lying off the coast of Palmer Land, Antarctica. The island lies in Carroll Inlet between the mainland and Smyley Island. It was mapped by the United States Geological Survey from surveys and from U.S. Navy aerial photographs, 1961–66. The name was suggested by Finn Ronne for Senator Francis H. Case, who assisted in obtaining Government support to provide a ship for the Ronne Antarctic Research Expedition, 1947–48.
Cavalier Rock is an isolated rock lying 13 nautical miles (24 km) southwest of Cape Adriasola, off the south part of Adelaide Island. It was named by the UK Antarctic Place-Names Committee in 1963 for Sub. Lieutenant Geoffrey A. Cavalier, Royal Navy, helicopter pilot of HMS Protector who flew the reconnaissances which located this feature.
Ward Islands is a group of two small islands and off-lying rocks forming the southern part of the Amiot Islands, off the southwest part of Adelaide Island. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for Herbert G.V. Ward, Chief Engineer of RRS John Biscoe, 1948–1962, which ship assisted the Royal Navy Hydrographic Survey Unit which charted this group in 1963.
Cronenwett Island is a high, ice-covered island about 40 kilometres (20 nmi) long. It lies between Vollmer Island and Steventon Island in the Marshall Archipelago, off the coast of Marie Byrd Land. The feature was first observed and roughly delineated from aerial photographs taken by the Byrd Antarctic Expedition, 1928–30. It was named by the Advisory Committee on Antarctic Names for Commander W.R. Cronenwett, U.S. Navy, Photographic Officer for Deep Freeze II, 1956–57, and Public Information Officer for Task Group 43.1 during Deep Freeze 1962.
The Knight Rocks are a group of small rocks which lie 8 kilometres (4.5 nmi) west-northwest of the south end of Snow Island, in the South Shetland Islands. The rocks were so named by the UK Antarctic Place-Names Committee following a survey by Lieutenant Commander F.W. Hunt, Royal Navy, in 1951–52, because of their proximity to Castle Rock.
Groves Island is an ice-covered island 9 kilometres (5 nmi) long, lying close off the coast of Marie Byrd Land, Antarctica, between Siemiatkowski Glacier and Land Glacier. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos (1959–65), and was named by the Advisory Committee on Antarctic Names for Benjamin F. Groves, a meteorologist at Byrd Station, 1964.
Grinder Island is one of the ice-covered islands in the Marshall Archipelago, located within the Sulzberger Ice Shelf off the coast of Marie Byrd Land, Antarctica. The island is 13 kilometres (7 nmi) long and 2 kilometres (1 nmi) wide and lies 24 kilometres (13 nmi) southwest of Steventon Island. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1959–65, and was named by the Advisory Committee on Antarctic Names for Harry W. Grinder, a U.S. Navy aviation structural mechanic of McMurdo Station, 1967.
The Embassy Islands are two small islands, the westernmost of the Dion Islands, lying 13 kilometres (7 nmi) south of Adelaide Island. The Dion Islands were first sighted and roughly charted in 1909 by the French Antarctic Expedition under Jean-Baptiste Charcot. This feature was surveyed in 1949 by the Falkland Islands Dependencies Survey and named "Embassy Rock" by the UK Antarctic Place-Names Committee because of its detached position in association with Emperor Island. In 1963 the British Royal Navy Hydrographic Survey Unit found there were two islands, not one as previously supposed.
The Moss Islands are a group of small islands and rocks lying east of Midas Island and north of Apéndice Island in Hughes Bay, off the west coast of Graham Land, Antarctica. They were first charted in detail and given the descriptive name "Moos Inseln" by the Swedish Antarctic Expedition under Otto Nordenskiöld in 1902.
Hannah Island is an ice-covered island in the Marshall Archipelago, lying between Hutchinson Island and Guest Peninsula within the Sulzberger Ice Shelf, off the coast of Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos (1959–65), and was named by the Advisory Committee on Antarctic Names for J.P. Hannah, a United States Antarctic Research Program ionospheric physicist at Byrd Station in 1968.
The Henkes Islands are a group of small islands and rocks 4 kilometres (2 nmi) in extent, lying 2 kilometres (1 nmi) southwest of Avian Island, close off the southern extremity of Adelaide Island, Antarctica. The islands were discovered by the French Antarctic Expedition, 1908–10, under Jean-Baptiste Charcot, and named by him for one of the Dutch directors of the Magellan Whaling Company at Punta Arenas. Charcot applied the name to the scattered rocks and islands between Cape Adriasola and Cape Alexandra, and the name was restricted to the group described by the UK Antarctic Place-Names Committee (UKAPC) following definitive mapping by the British Antarctic Survey (BAS) in 1961 and the British Royal Navy Hydrographic Survey (BRNHS) in 1963. All of the islands in the group were named by UKAPC.
Kizer Island is an ice-covered island about 30 kilometres (15 nmi) long, lying 20 kilometres (10 nmi) southwest of Cronenwett Island at the west end of the Sulzberger Ice Shelf off Saunders Coast, Marie Byrd Land, Antarctica. It was mapped from surveys by the United States Geological Survey (USGS) and from U.S. Navy air photos (1959–65), and was named for Lieutenant T.L. Kizer, U.S. Navy, a helicopter pilot on the USS Glacier (AGB-4) who sighted the island from the air on January 26, 1962.
The Kirkwood Islands are a scattered group of reefs and rocks, with one larger island, lying in the central part of Marguerite Bay, 28 kilometres (15 nmi) south-southwest of the Faure Islands, Antarctica. The islands were sighted in 1949 from the Falkland Islands Dependencies Survey vessel John Biscoe, and a running survey was made from the ship in 1950. They are named for Commander Henry Kirkwood, Royal Navy, in command of the John Biscoe at that time.
Rocca Islands is a group of small islands and rocks 3 nautical miles (6 km) east of Avian Island, off the south end of Adelaide Island. Discovered in 1909 by the French Antarctic Expedition and named by Charcot for Monsieur Rocca, an acquaintance in Punta Arenas. Remapped by the British Royal Navy Hydrographic Survey Unit in 1963.
