The Calf of Flotta is a small island in Scapa Flow, Orkney. The Calf is next to Flotta, with "Calf" deriving from Old Norse/Norn and meaning a smaller island by a larger one.
Wikipedia https://en.wikipedia.org/wiki/Calf_of_Flotta
Coordinates 58°51'12.367" N -3°4'23.866" E