U-570 Type VIIC submarine that was captured by the British in 1941. This U-boat is almost identical toU-904. | |
| History | |
|---|---|
| Name | U-904 |
| Ordered | 16 July 1942 |
| Builder | Flender Werke AG,Lübeck |
| Yard number | 330 |
| Laid down | 10 September 1942 |
| Launched | 7 August 1943 |
| Commissioned | 25 September 1943 |
| Fate | Scuttled on 4 May 1945 |
| General characteristics | |
| Class & type | Type VIICsubmarine |
| Displacement | |
| Length |
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| Beam |
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| Height | 9.60 m (31 ft 6 in) |
| Draught | 4.74 m (15 ft 7 in) |
| Installed power |
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| Propulsion |
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| Speed |
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| Range | |
| Test depth |
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| Complement | 4 officers, 44–52 enlisted |
| Armament |
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| Service record | |
| Part of: |
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| Identification codes: | M 52 703 |
| Commanders: | |
| Operations: | None |
| Victories: | None |
German submarineU-904 was aType VIICU-boat ofNazi Germany'sKriegsmarine duringWorld War II.
She was ordered on 16 July 1942, and waslaid down on 10 September 1942 atFlender Werke AG,Lübeck, as yard number 330. She waslaunched on 7 August 1943 andcommissioned under the command ofLeutnant zur See Detlev Fritz on 25 September 1943.[4]
German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-904 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[5] 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, twoSSW 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).[5]
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).[5] 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-904 was fitted with five 53.3 cm (21 in)torpedo tubes (four fitted at the bow and one at the stern), fourteentorpedoes or 26 TMAmines, 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 44 — 52 men.[5]
On 4 May 1945,U-904 wasscuttled at the U-boat base inEckernförde.[4]