German submarine U - 530 German submarine " U - 530 " was a Type IXC / 40 U - boat of the German Navy during World War II . She was laid down at the Deutsche Werft in Hamburg on 8 December 1941 as ' werk ' 345 , launched on 28 July 1942 and commissioned on 14 October 1942 with " Kapitänleutnant " Kurt Lange in command . He was replaced in January 1945 by " Oberleutnant " Otto Wermuth . She served with the 4th U - boat Flotilla while training , then the 10th flotilla from 1 March 1943 to 30 September 1944 and the 33rd flotilla from 1 October 1944 to 8 May 1945 . " U - 530 " completed seven war patrols , sinking two ships totalling and damaging another of . She surrendered in Mar del Plata , Argentina on 10 July 1945 . Wartime service . 1st patrol . The submarine left Kiel on her first patrol on 20 February 1943 . Her route to the Atlantic took her through the gap between Iceland and the Faeroe Islands . On 9 March she sank the Swedish ship " Milos " in mid - Atlantic , at a point roughly equidistant from the southern tip of Greenland , Iceland and northwest Scotland . She also sank the American " Sunoil " on 5 April after the tanker had already been hit by " U - 563 " . She then made her way to the port of Lorient in occupied France , arriving on 22 April . 2nd , 3rd and 4th patrols . These three forays were relatively uneventful , apart from her home port being moved to Bordeaux and then La Pallice . 5th patrol . Her fifth patrol took her to the Caribbean Sea where she attacked and damaged the American " Chapultepec " on 26 December 1943 . She was forced to return to France when she was rammed by the tanker " Esso Buffalo " on 29 December . She arrived at Lorient on 22 February 1944 . 6th patrol . For her sixth sortie , " U - 530 " departed Lorient on 22 May 1944 ultimately for operations in the Trinidad area . On her outward voyage she was to rendezvous with the and supply the larger boat with a Naxos radar detector , a radar operator and a German navigator to help the " I - 52 " complete her journey . The two submarines rendezvoused on 23 June in mid - Atlantic , west of the Cape Verde Islands . The Allies had been informed of the rendezvous and directed the escort carrier to the scene ; her aircraft managed to sink the " I - 52 " with an acoustic torpedo . " U - 530 " returned to base , this time Flensburg , after 133 days at sea . A short journey from Kiel to Horten in southern Norway was her recorded next move , but it did not count as a patrol . 7th patrol and surrender . " U - 530 " did not initially surrender at war ' s end , as ordered by Admiral Dönitz ; instead the crew headed for Argentina and ultimately surrendered to the Argentine Navy on 10 July 1945 at Mar del Plata . Her captain , " Oberleutnant " Otto Wermuth , had decided to surrender at Mar del Plata . He did not explain why it had taken him more than two months to reach there , nor why the submarine had jettisoned its deck gun , or why the crew carried no identification , nor what had happened to the ship ' s log . The unexpected arrival of " U - 530 " started many rumors . Brazilian Admiral Jorge Dodsworth Martins said he believed that " U - 530 " could have sunk the cruiser " Bahia " , while Admiral Dudal Teixeira , also a Brazilian , believed that the " U - 530 " had come from Japan . An Argentine reporter claimed that he had seen a Buenos Aires provincial police report to the effect that a strange submarine had surfaced off the lower Argentine coast and had landed a high - ranking officer and a civilian who might have been Adolf Hitler and Eva Braun in disguise . was also accused of sinking the " Bahia " ; an inquiry eventually found that she had been sunk due to a gunnery accident . The Argentine Naval Ministry issued an official communique in which they stated that " U - 530 " was not responsible for the sinking of the " Bahia " ; no Nazi leader or high - ranking military officers were aboard ; and the " U - 530 " had landed no one on the coast of Argentina before surrendering . The crew of the " U - 530 " were interned , they and the boat were then transferred to the United States . The submarine was sunk as a target on 28 November 1947 by a torpedo from American submarine . Sensors . Radar . " U - 530 " was one of the few U - boats that was fitted with a FuMO 61 " Hohentwiel " U Radar Transmitter . It was installed on the starboard side of the conning tower . Radar Detection . " U - 530 " was fitted with the FuMB - 26 " Tunis " antenna . References .