By order of the German navy, in the summer of 1935 they developed a pulse radar with which they could spot the cruiser Königsberg at a distance of 8 km, with an accuracy of up to 50 m, enough for gun-laying. The same system could also detect an aircraft at 500 m altitude at a distance of 28 km.[1][2] The military implications were not lost this time around, and construction of land and sea-based versions took place as Freya radar and Seetakt.