German submarine U-422 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
She carried out one patrol. She was a member of one wolfpack. She did not sink or damage any ships.
She was sunk by an American aircraft north of the Azores on 4 October 1943.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-422 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-422 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 11 February 1942 at the Danziger Werft (yard) at Danzig (now Gdansk), as yard number 123, launched on 10 October and commissioned on 10 February 1943 under the command of Oberleutnant zur See Wolfgang Poeschel.
She served with the 8th U-boat Flotilla from 10 February 1943 and the 1st flotilla from 1 August 1943.
The boat's only patrol was preceded by a trip from Kiel in Germany to Bergen in Norway. U-422 then left Bergen on 8 September 1943 and headed for the Atlantic Ocean via the gap between Iceland and the Faroe Islands. U-422 was depth charged and strafed by what was reported as a Handley Page Halifax on the 23rd. Three men were wounded, two of them seriously. Medical assistance could only be given when the submarine rendezvoused with, a 'milch cow' supply vessel.
On 4 October, she was attacked and sunk by a FIDO homing torpedo dropped by an American TBM Avenger which was accompanied by a F4F Wildcat. Both aircraft had come from the escort carrier .
Forty-nine men went down with the U-boat; there were no survivors.
U-422 took part in one wolfpack, namely: