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German submarine U-402
German submarine U-402 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
She was laid down at the Danziger Werft in the city of the same name on 22 April 1940 as yard number 103, launched on 28 December 1940 and was commissioned on 21 May 1941, with Kapitänleutnant Siegfried Freiherr von Forstner in command.
The boat commenced her career with the 3rd U-boat Flotilla on 21 May 1941 carrying-out training before moving on to operations on 1 October 1941. U-402 carried out eight combat patrols, sinking 14 merchantmen and one auxiliary warship for a total of 71,036 gross register tons (GRT) during the Second World War. She also damaged three other ships. The submarine was a member of twelve wolfpacks.
For his numerous successes, von Forstner received the Knight's Cross.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-402 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).
The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-402 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
No ships were sunk during the first patrol which lasted from 26 October to 9 December 1941. U-402 followed the Norwegian coast from Kiel before heading west towards the Atlantic. The submarine sailed into St. Nazaire in France, after 45 uneventful days.
On her second patrol, U-402 damaged the 11,951 GRT troopship Llangibby Castle off the Bay of Biscay on 16 January 1942, but the troopship was able to make repairs in the Azores. U-402 returned to St. Nazaire on 11 February 1942.
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German submarine U-402 AI simulator
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German submarine U-402
German submarine U-402 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
She was laid down at the Danziger Werft in the city of the same name on 22 April 1940 as yard number 103, launched on 28 December 1940 and was commissioned on 21 May 1941, with Kapitänleutnant Siegfried Freiherr von Forstner in command.
The boat commenced her career with the 3rd U-boat Flotilla on 21 May 1941 carrying-out training before moving on to operations on 1 October 1941. U-402 carried out eight combat patrols, sinking 14 merchantmen and one auxiliary warship for a total of 71,036 gross register tons (GRT) during the Second World War. She also damaged three other ships. The submarine was a member of twelve wolfpacks.
For his numerous successes, von Forstner received the Knight's Cross.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-402 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).
The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-402 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
No ships were sunk during the first patrol which lasted from 26 October to 9 December 1941. U-402 followed the Norwegian coast from Kiel before heading west towards the Atlantic. The submarine sailed into St. Nazaire in France, after 45 uneventful days.
On her second patrol, U-402 damaged the 11,951 GRT troopship Llangibby Castle off the Bay of Biscay on 16 January 1942, but the troopship was able to make repairs in the Azores. U-402 returned to St. Nazaire on 11 February 1942.