<prompt> Qedela lo musho olandelayo: Ngo-1941, ukwakhiwa kwesisekelo semikhumbi-ngwenya iDORA 1 kwaqala eTrondheim. Eminyakeni emibili kamuva, ngoJuni 1943, yanikezwa umlawuli we-flotilla, Korvettenkapitän kamuva Fregattenkapitän uRolf Rüggeberg. I-13th submarine flotilla yayiyiyunithi engaphambili, futhi ingqikithi ye-55 Type VIIC kanye ne- a hrefGerman20Type20VII20submarine23Type20VIIC.2F41VIIC41a yasebenza nayo kwaze kwaba  <response>: ekupheleni kwempi ngo-May 1945. 