When was the the ship launched ,that along with the Tripitz and the Lützow was a target for  Operation Source ?
German battleship Scharnhorst Scharnhorst was a German capital ship, alternatively described as a battleship and battlecruiser, of Nazi Germany's "Kriegsmarine". She was the lead ship of her class, which included one other ship, "Gneisenau" . The ship was built at the "Kriegsmarinewerft" dockyard in Wilhelmshaven; she was laid down on 15 June 1935 and launched a year and four months later on 3 October 1936. Completed in January 1939, the ship was armed with a main battery of nine 28 cm (11 in) C/34 guns in three triple turrets. Plans to replace these weapons with six 38 cm (15 in) SK C/34 guns in twin turrets were never carried out.
German submarine U-35 (1936) German submarine "U-35" was a Type VIIA U-boat of Nazi Germany's "Kriegsmarine". She was built three years before the start of World War II. The submarine was laid down on 2 March 1936 by Friedrich Krupp Germaniawerft at Kiel, launched on 24 September 1936, and commissioned on 3 November that year under the command of "Kapitänleutnant" ("Kptlt.") Klaus Ewerth. The U-boat was featured on the cover of "Life" magazine on 16 October 1939, as in the days preceding, it "courteously" rescued all the sailors of a Greek ship that it was about to sink.