German submarine U-1225

History
Nazi Germany
Name	U-1225
Ordered	25 August 1941
Builder	Deutsche Werft, Hamburg
Yard number	388
Laid down	28 December 1942
Launched	21 July 1943
Commissioned	10 November 1943
Fate	Sunk on 24 June 1944
General characteristics
Class and type	Type IXC/40 submarine
Displacement	1,144 t (1,126 long tons) surfaced; 1,257 t (1,237 long tons) submerged;
Length	76.76 m (251 ft 10 in) o/a; 58.75 m (192 ft 9 in) pressure hull;
Beam	6.86 m (22 ft 6 in) o/a; 4.44 m (14 ft 7 in) pressure hull;
Height	9.60 m (31 ft 6 in)
Draught	4.67 m (15 ft 4 in)
Installed power	4,400 PS (3,200 kW; 4,300 bhp) (diesels); 1,000 PS (740 kW; 990 shp) (electric);
Propulsion	2 shafts; 2 × diesel engines; 2 × electric motors;
Speed	18.3 knots (33.9 km/h; 21.1 mph) surfaced; 7.3 knots (13.5 km/h; 8.4 mph) submerged;
Range	13,850 nmi (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph) surfaced; 63 nmi (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	230 m (750 ft)
Complement	4 officers, 44 enlisted
Armament	6 × torpedo tubes (4 bow, 2 stern); 22 × 53.3 cm (21 in) torpedoes; 1 × 10.5 cm (4.1 in) SK C/32 deck gun (180 rounds); 1 × 3.7 cm (1.5 in) Flak M42 AA gun; 2 x twin 2 cm (0.79 in) C/30 AA guns;
Service record
Part of:	31st U-boat Flotilla; 10 November 1943 – 31 May 1944; 2nd U-boat Flotilla; 1 – 24 June 1944;
Identification codes:	M 53 196
Commanders:	Oblt.z.S. Ernst Sauerberg; 10 November 1943 – 24 June 1944; Oblt.z.S. Ekkehard Scherraus; 15 May – 12 June 1944;
Operations:	1 patrol:; 20 – 24 June 1944;
Victories:	None

German submarine U-1225 was a

Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during World War II

.

The submarine was laid down on 28 December 1942 at the Deutsche Werft yard at Hamburg, launched on 21 July 1943, and commissioned on 10 November 1943 under the command of Oberleutnant zur See Ernst Sauerberg. The U-boat then served with 31st U-boat Flotilla, a training unit, until 31 May 1944. She was then transferred to the 2nd U-boat Flotilla for active service.^[1]

Design

supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.92 m (6 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 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph).

2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of forty-eight.^[3]

Service history

U-1225 had a short but active career. She departed Kristiansand on 20 June 1944, never to return. Four days out of port, the new submarine was attacked by Canso aircraft of No. 162 Squadron RCAF. The flying boat was shot down, but not before her depth charges fatally wounded the U-boat. All 56 sailors went down with the sub. Three of the eight aircrew from the Catalina were lost as well.^[4] The pilot, David Ernest Hornell, was awarded a posthumous Victoria Cross.

References

^ ^a ^b Helgason, Guðmundur. "The Type IXC/40 boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.
^ Helgason, Guðmundur. "War Patrols by German U-boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.
^ ^a ^b ^c ^d Gröner 1991, p. 68.
^ Helgason, Guðmundur. "Patrol of U-boat U-1225 from 20 June 1944 to 24 June 1944". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.

Bibliography

Bishop, Chris (2006). Kriegsmarine U-Boats, 1939–45. London: Amber Books.
ISBN 978-1-904687-96-2
.

Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press.
ISBN 1-55750-186-6
.

Gröner, Erich; Jung, Dieter; Maass, Martin (1991). German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press.
ISBN 0-85177-593-4
.

External links

Helgason, Guðmundur. "The Type IXC/40 boat U-1225". German U-boats of WWII - uboat.net. Retrieved 7 December 2014.
Hofmann, Markus. "U 1225". Deutsche U-Boote 1935–1945 - u-boot-archiv.de (in German). Retrieved 12 October 2022.

63°00′N 0°50′W / 63.000°N 0.833°W / 63.000; -0.833

[uboatnet-1] Helgason, Guðmundur. "The Type IXC/40 boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.

[patrols-2] Helgason, Guðmundur. "War Patrols by German U-boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.

[FOOTNOTEGröner199168-3] Gröner 1991, p. 68.

[4] Helgason, Guðmundur. "Patrol of U-boat U-1225 from 20 June 1944 to 24 June 1944". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.

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