The Windmill Islands are an Antarctic group of rocky islands and rocks about 11.1 kilometres (6 nmi) wide, paralleling the coast of Wilkes Land for 31.5 kilometres (17 nmi) immediately north of Vanderford Glacier along the east side of Vincennes Bay. Kirkby Shoal is a small shoal area with depths of less than 18 metres (59 ft) extending about 140 metres (459 ft) westwards and SSW, about 3.4 kilometres (2.1 mi) from the summit of Shirley Island, Windmill Islands, and 0.24 kilometres (0.15 mi) NW of Stonehocker Point, Clark Peninsula.
Holl Island is a rocky, triangular-shaped Antarctic island, 3.1 km (1.7 nmi) long, marking the south-western end of the Windmill Islands.
The Allison Islands are a small chain of Antarctic islands lying in the north side of the entrance to Sparkes Bay in the Windmill Islands. They were first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for William L. Allison, ionospheric scientist and member of the Wilkes Station party of 1958.
Beall Island is a rocky island with small coves indenting the eastern and western sides, lying 600 m (660 yd) south-west of the Bailey Peninsula, in the Windmill Islands on the Budd Coast of Antarctica. There are several small lakes on the island. It was first mapped from aerial photos taken by the USN's Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for James M. Beall, U.S. Weather Bureau observer with Operation Windmill who assisted staff aerology officers with forecasting duties. The Beall Reefs are submarine ridges with depths of less than 1.8 metres, located 1 kilometre (0.6 mi) west of the island; they were discovered at the establishment of Wilkes Station in 1961 and named by ANCA after the island. Connors Point is the north-western point of the island; it was named by the US-ACAN for Aerographer's Mate William J. Connors, USN, a member of the Wilkes Station party of 1958.
Peterson Island is a rocky island, 3.5 km (2.2 mi) long, with two inlets indenting the north side, lying west of, and separated by a narrow channel 200-400 m wide from, the Browning Peninsula, in the southern part of the Windmill Islands on the Budd Coast of Wilkes Land, Antarctica.
Birkenhauer Island is a mainly ice-free Antarctic island lying south of Boffa Island in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for Reverend Henry F. Birkenhauer, S. J., seismologist and member of the Wilkes Station party of 1958.
Boffa Island is a rocky, ridge-like Antarctic island, 1.5 km (0.8 nmi) long, lying half a kilometre east of Browning Peninsula between Bosner and Birkenhauer Islands, in the south part of the Windmill Islands. It was first mapped by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for W. C. Boffa, observer with the then Army Strategic Air Command (SAC), who assisted Operation Windmill parties in establishing astronomical control stations in the area in January 1948.
Herring Island is an Antarctic rocky island, 3.7 km (2 nmi) long, lying 1.9 km (1 nmi) east of Cloyd Island in the south part of the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for Lt. Charles C. Herring, USN, photographic officer with Operation Windmill parties which obtained air and ground photos of the area in January 1948.
Borrello Island is a small Antarctic island lying off the western side of Hollin Island, in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1946 and 1947. Named by the US-ACAN for Sebastian R. Borrello, geomagnetician at Wilkes Station in 1958.
Bosner Island is an Antarctic rocky island, 0.6 km (0.3 nmi) long, lying 0.19 km (0.1 nmi) northwest of Boffa Island and half a kilometre east of Browning Peninsula in the south part of the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for Paul Bosner, member of one of the two Operation Windmill photographic units which obtained aerial and ground photos of the area in January 1948.
Cloyd Island is a rocky Antarctic island, 1.1 km (0.6 nmi) long, between Ford and Herring Islands in the south part of the Windmill Islands off the Budd Coast. It was first mapped from aerial photographs taken by USN Operation Highjump and Operation Windmill, 1947–1948. Named by the US-ACAN for J. R. Cloyd, Army Transport Service observer with Operation Windmill which established astronomical control stations in the area in January 1948.
Denison Island is an Antarctic island lying 0.5 kilometres (0.25 nmi) west of Beall Island in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for Dean R. Denison, auroral scientist and member of the Wilkes Station party of 1958.
Ford Island is a rocky Antarctic island, 2.4 km (1.3 nmi) long, between O'Connor and Cloyd Islands in the southern part of the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for Homer D. Ford, photographic officer with the eastern task group of Operation Highjump and assistant photographic officer with the Operation Windmill parties which obtained air and ground photos of this area in January 1948.
Hemphill Island is a small, mainly ice-covered Antarctic island lying between Robinson Ridge and Odbert Island, in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for George R. Hemphill, meteorologist and member of the Wilkes Station party of 1961.
Kilby Island is a rocky Antarctic island, 0.37 kilometres (0.2 nmi) long, lying northeast of McMullin Island in the entrance of Newcomb Bay, in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for Arthur L. Kilby, who served as photographer with both operations.
Shirley Island is a rocky island lying 200 m (220 yd) north-west of the western end of the Bailey Peninsula, in the Windmill Islands of the Budd Coast, Wilkes Land, Antarctica. It is mostly ice-free with undulating, rocky terrain. It was first mapped from aerial photos taken by the USN's Operation Highjump in February 1947. It was named by the US-ACAN for Q. Shirley, chief photographer's mate on Operation Highjump photographic flights in coastal areas between 14° and 164° E longitude. Kirkby Shoal is a small shoal area with depths of less than 18 meters (59 ft) extending about 140 meters (459 ft) westwards and south-south-west, about 3.4 km (2.1 mi) from the summit of Shirley Island. Launch Channel is the narrow body of water between Bailey Peninsula and the island; with the relatively shallow soundings in the channel restricting its use to smaller craft and suggesting the name.
Pidgeon Island is a rocky Antarctic island, 2 kilometres (1 nmi) long, between Midgley Island and Mitchell Peninsula in the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. It was named by the US-ACAN for E. C. Pidgeon, Photographer's Mate on Operation Highjump flights in this area and other coastal areas between 14 and 164 East longitude. Thought to be a separate unit, the eastern part of this feature was previously named O'Brien Islet. The name O'Brien is now applied to the bay north of Mitchell Peninsula.
McIntyre Island is a small Antarctic island just west of Blakeney Point, Clark Peninsula, in the Windmill Islands. It was photographed from the air by USN Operation Highjump in 1946-47 and was included in a 1957 ground survey by C. R. Eklund. It was named by the latter for construction mechanic Albert McIntyre, USN, of the Wilkes Station party, 1957.
Operation Windmill (OpWml) was the United States Navy's Second Antarctica Developments Project, an exploration and training mission to Antarctica in 1947–1948. This operation was a follow-up to the First Antarctica Development Project known as Operation Highjump (1946–1947). The expedition was commanded by Commander Gerald L. Ketchum, USN, and the flagship of Task Force 39 was the icebreaker USS Burton Island.
The Swain Islands are a group of small islands and rocks about 3.7 kilometres (2 nmi) in extent, lying 0.9 kilometres (0.5 nmi) north of Clark Peninsula at the northeast end of the Windmill Islands. Delineated from aerial photographs taken by U.S. Navy Operation Highjump in February 1947. Named by the Advisory Committee on Antarctic Names (US-ACAN) for K. C. Swain who served as air crewman with the central task group of U.S. Navy Operation Highjump, 1946–47, and also with USN. Operation Windmill which obtained aerial and ground photographic coverage of the Windmill Islands in January 1948.
