It was originally proposed three sites for the location: Nuuk, Narsarsuaq or the current location of the Marine Station Grønnedal (Kangilinnguit) - here the choice fell on Nuuk.
Amphibian aircraft slips were available at Kungnat Bay and Grondal, and several other protected places were usable for seaplanes; however, the nearest air base was at BW-1 (Narsarsuaq) about 100 miles east-south-east.