EAST ANGLIA, ENGLAND—Windfarm development companies ScottishPower Renewables (SPR) and Vattenfall discovered more than 60 shipwrecks, including a World War I-era German submarine, in the North Sea while scanning the seabed. The uncharted vessel has been missing in action since January 13, 1915. “U-31 was the first of 11 Type U-31 submarines built between 1912 and 1915. The class were considered very good high sea boats with good surface steering; eight were sunk during operations while three surrendered and were scrapped after the war. Of those lost during operations, the whereabouts and fate of two, including U-31, was unknown,” marine archaeologist Mark Dunkley of Historic England said in a press release. The submarine is well preserved and will be protected from any windfarm development. To read more about the archaeology of World War I, go to "Letter From Turkey."