German submarine U-422

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.

Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-422 had a displacement of 769 t when at the surface and 871 t while submerged. She had a total length of 67.10 m, a pressure hull length of 50.50 m, a beam of 6.20 m, a height of 9.60 m, and a draught of 4.74 m. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2800 to 3200 PS for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of 750 PS for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 m.

The submarine had a maximum surface speed of 17.7 kn and a maximum submerged speed of 7.6 kn. When submerged, the boat could operate for 80 nmi at 4 kn; when surfaced, she could travel 8500 nmi at 10 kn. U-422 was fitted with five 53.3 cm torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm SK C/35 naval gun, 220 rounds, and two twin 2 cm C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.

Service history
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.

Patrol and loss
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 GS U-460, 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 USS Card (CVE-11).

Forty-nine men went down with the U-boat; there were no survivors.

Wolfpacks
U-422 took part in one wolfpack, namely:
 * Leuthen (15 – 24 September 1943)