Simiutaq is located south of the mouth of the Ikersuaq fjord in the Julianehab Bay, Labrador Sea, North Atlantic Ocean, near Qaqortoq.

It should not be confused with another Simiutak (aka 'Cruncher Island') in western Greenland that served as a support station for Sondrestrom Air Base, and known as 'Bluie West 9'.

The station at Simiutak Island, commonly referred to as Bluie West 3 (BW-3) during the time of American operation, was a major wartime radio communications and meteorological facility on the southwest coast of Greenland, marking the entrance to the fjords that led to Narsarsuaq and Julianehaab.

Coast Guard documents show the ship Algonquin arriving from Boston with a radio beacon for Site A (Gamatron) in November.

On 15 August BW-3 was declared in full operation and simultaneously, nearby aircraft guard station "C" (ship) was abandoned.

After the United States Air Force left BW-3, agencies of the Danish government took over and operated the site for many years.