. "--02-02"^^ . . . . . . "German submarine U-18 was a Type IIB U-boat of the Nazi German Kriegsmarine during World War II. It was laid down 10 July 1935 and commissioned on 4 January 1936. It served in many U-boat flotillas during its service."@en . . . . . . . . . "German submarine U-18 (1935)"@en . . . . . . . . . "German submarine U-18 was a Type IIB U-boat of the Nazi German Kriegsmarine during World War II. It was laid down 10 July 1935 and commissioned on 4 January 1936. It served in many U-boat flotillas during its service."@en . . . . .