 The objective was to destroy the Glomfjord power plant, south of Narvik, which supplied an aluminium plant in the area.Glomfjord power station was built at the end of Glomfjord in 1918 on a plateau dropping straight down to the sea.The plant comprised three buildings, the longest was the machinery hall, the middle building housed the control room and offices and the last building was three-storeyed and known as the apparatus house.