Wyatt Island is an island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

, 5 nautical miles (9 km) long and 2 nautical miles (3.7 km) wide, lying 2 nautical miles (3.7 km) south of Day Island

Day Island

Day Island is an island, 7 nautical miles long and 3 nautical miles wide, lying immediately south of The Gullet and 2 nautical miles north of Wyatt Island in the north part of Laubeuf Fjord, off the west coast of Graham Land...

 near the center of Laubeuf Fjord

Laubeuf Fjord

Laubeuf Fjord is a sound in Antarctica, 25 miles long in a north-south direction and averaging 10 miles wide, lying between the east-central portion of Adelaide Island and the southern part of Arrowsmith Peninsula, Graham Land. It connects Hanusse Bay to the north with Marguerite Bay to the south...

, off the west coast of Graham Land

Graham Land

Graham Land is that portion of the Antarctic Peninsula which lies north of a line joining Cape Jeremy and Cape Agassiz. This description of Graham Land is consistent with the 1964 agreement between the British Antarctic Place-names Committee and the US Advisory Committee on Antarctic Names, in...

. First surveyed in 1936 by the British Graham Land Expedition

British Graham Land Expedition

A British expedition to Graham Land led by John Lachlan Cope took place between 1920 and 1922. The British Graham Land Expedition was a geophysical and exploration expedition to Graham Land in Antarctica between 1934 to 1937. Under the leadership of John Riddoch Rymill, the expedition spent two...

 (BGLE) under Rymill which used the provisional name South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

 for this feature. The island was resurveyed in 1948 by the Falkland Islands Dependencies Survey (FIDS) and was renamed by Vice Admiral Sir Arthur G.N. Wyatt, Hydrographer to the Navy, 1945-50.