| History | |
|---|---|
| Name | U-477 |
| Ordered | 10 April 1941 |
| Builder | Deutsche Werke,Kiel |
| Yard number | 308 |
| Laid down | 17 October 1942 |
| Launched | 3 July 1943 |
| Commissioned | 18 August 1943 |
| Fate | Sunk on 3 June 1944[1][2] |
| General characteristics | |
| Class & type | Type VIICsubmarine |
| Displacement | |
| Length |
|
| Beam |
|
| Height | 9.60 m (31 ft 6 in) |
| Draught | 4.74 m (15 ft 7 in) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range | |
| Test depth |
|
| Complement | 4 officers, 40–56 enlisted |
| Armament |
|
| Service record[1] | |
| Part of: |
|
| Identification codes: | M 54 593 |
| Commanders: |
|
| Operations: |
|
| Victories: | None |
German submarineU-477 was aType VIICU-boat ofNazi Germany'sKriegsmarine duringWorld War II.
She carried out one patrol. She sank no ships.
She was sunk by a Canadian aircraft, west ofTrondheim on 3 June 1944.[1][2]
German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-477 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[3] She had a total length of 67.10 m (220 ft 2 in), apressure hull length of 50.50 m (165 ft 8 in), abeam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and adraught of 4.74 m (15 ft 7 in). The submarine was powered by twoGermaniawerft F46 four-stroke, six-cylindersuperchargeddiesel 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, twoSiemens-Schuckert GU 343/38–8double-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).[3]
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).[3] 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-477 was fitted with five 53.3 cm (21 in)torpedo tubes (four fitted at the bow and one at the stern), fourteentorpedoes, one8.8 cm (3.46 in) SK C/35 naval gun, (220 rounds), one3.7 cm (1.5 in) Flak M42 and two twin2 cm (0.79 in) C/30 anti-aircraft guns. The boat had acomplement of between forty-four and sixty.[3]
The submarine waslaid down on 17 October 1942 at theDeutsche Werke inKiel as yard number 308,launched on 3 July 1943 andcommissioned on 18 August under the command ofOberleutnant zur See Karl-Joachim Jenssen.
She served with the5th U-boat Flotilla from 18 August 1943 for training and the3rd flotilla from 1 June 1944 for operations.
U-477's only patrol was preceded by a short trip fromKiel in Germany toKristiansand in Norway. The patrol itself began with the boat's departure from Kristiansand on 15 May 1944.
On 3 June she was attacked and sunk bydepth charges dropped from a CanadianCanso flying boat ofNo. 162 Squadron RCAF west ofTrondheim.
Fifty-one men went down withU-477; there were no survivors.[1][2]