German submarine U-25 was one of two Type IA ocean-going submarines produced by the Nazi German Kriegsmarine. Constructed by AG Weser in Bremen as 'werk' 903, U-25 was commissioned on 6 April 1936. It experienced a short, but successful combat career, sinking eight ships and damaging one. On 17 January 1940, 10 miles north of Shetland, U-25 torpedoed the SS Polzella. The Enid (Captain Wibe), of then-neutral Norway en route to Dublin, went to assist the Polzella. U-25 then shelled and sank Enid. Her crew escaped in their lifeboats. None of Polzella 's crew survived.