Barrett Island is an ice-covered 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...

 about 2 miles (3 km) long, lying just within the north part of the mouth of Morgan Inlet

Morgan Inlet

Morgan Inlet is an ice-filled inlet about 18 nautical miles long, with two branches, indenting the east end of Thurston Island between Lofgren and Tierney Peninsulas. Discovered in helicopter flights from USS Bellingshausen Sea Expedition in February 1960. Named by Advisory Committee on Antarctic...

, Thurston Island

Thurston Island

Thurston Island is an ice-covered, glacially dissected island, long, wide and in area, lying a short way off the NW end of Ellsworth Land, Antarctica. It is the third largest island of Antarctica, after Alexander Island and Berkner Island...

. It was mapped by the United States Geological Survey

United States Geological Survey

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...

 from surveys and from U.S. Navy air photos, 1960–66, and named by the Advisory Committee on Antarctic Names

Advisory Committee on Antarctic Names

The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...

 for Lieutenant (j.g.) Barry B. Barrett, pilot of Squadron VX-6

VX-6

Air Development Squadron Six was a United States Navy Air Development Squadron based at McMurdo Station, Antarctica...

 on photographic flights during U.S. Navy Operation Deepfreeze 1964.