In August 1942, the Imperial Japanese Navy submarine I-30 became the first Japanese vessel to reach German-occupied Europe, docking at the U-boat base in Lorient, France, after a hazardous voyage around the Cape of Good Hope as part of the secret Yanagi technology-exchange program.
Commander Shinobu Endo and his crew were personally welcomed by Großadmiral Erich Raeder and Admiral Karl Dönitz, who oversaw the transfer of strategic items including Japanese Type 91 torpedo blueprints alongside German Würzburg radar systems, torpedo prototypes, and Enigma encoding machines…
Source: x.com/wagn36507