German submarine U-430 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
She carried out no patrols. She did not sink or damage any ships.
She was sunk in northern Germany by US bombs on 30 March 1945.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-430 had a displacement of 769t when at the surface and 871t while submerged. She had a total length of 67.1m (220.1feet), a pressure hull length of 50.5m (165.7feet), a beam of 6.2m (20.3feet), a height of 9.6m (31.5feet), and a draught of 4.74m (15.55feet). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of NaNPS for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of 750PS for use while submerged. She had two shafts and two 1.23abbr=onNaNabbr=on propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . U-430 was fitted with five 53.30NaN0 torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.82NaN2 SK C/35 naval gun, 220 rounds, and two twin 2sp=usNaNsp=us C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.
The submarine was laid down on 5 October 1942 at the Danziger Werft (yard) at Danzig (now Gdansk), as yard number 131, launched on 22 April 1943 and commissioned on 4 August under Tenente di vascello Mario Rossetto.
She served with the 8th U-boat Flotilla from 4 August 1943 and the 21st Flotilla from 29 September. She was reassigned to the 31st Flotilla on 1 February 1945.
The U-boat was named S-6 after being acquired by the Italian Navy in exchange for some transport ships. She returned to Germany after the Italian surrender where she was renamed U-430.
The submarine was sunk by US bombs near Bremen on 30 March 1945.
Two men died; the number of survivors is unknown.