|Administered under the Antarctic Treaty System|
The island was photographed from the air in the course of the US Navy's Operation Highjump (1946–47) and its position fixed by the Australian National Antarctic Research Expeditions (1956). It was named by Carl R. Eklund for Gilbert Dewart, a seismologist at Wilkes Station, 1957.
Antarctic Specially Protected Area
The island forms part of the Frazier Islands Antarctic Specially Protected Area (ASPA) No.160 because it supports one of only four known breeding colonies of southern giant petrels on continental Antarctica.
- "Dewart Island". Geographic Names Information System. United States Geological Survey. Retrieved 2012-01-17.
- "Frazier Islands, Windmill Islands, Wilkes Land, East Antarctica" (PDF). Management Plan for Antarctic Specially Protected Area No. 160: Measure 13, Annex. Antarctic Treaty Secretariat. 2008. Retrieved 2013-03-11.
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