U-1228

Type

IXC/40

Ordered

14 Oct 1941

Laid down

16 Feb 1943

Deutsche Werft AG, Hamburg (werk 391)

Launched

2 Oct 1943

Commissioned

22 Dec 1943

Oblt. Friedrich-Wilhelm Marienfeld

Commanders

22 Dec 1943

13 May 1945

Oblt. Friedrich-Wilhelm Marienfeld

Career
2 patrols

22 Dec 1943	-	31 Jul 1944	31. Flottille (training)
1 Aug 1944	-	31 Oct 1944	2. Flottille (active service)
1 Nov 1944	-	8 May 1945	33. Flottille (active service)

Successes

1 warship sunk, total tonnage 900 tons

Fate

Surrendered at Portsmouth, New Hampshire, USA on 17 May 1945 (Waller & Niestlé, 2010).

Scuttled 5 Feb 1946 off the east coast of Cape Cod, USA by torpedoes from the American submarine USS Sirago.

Final location

See the 1 ships hit by U-1228 - View the 2 war patrols

Attacks on this boat

18 Sep 1944
At 22.53 hours, the boat was attacked by a Leigh Light equipped British Liberator (224 Sqdn RAF/R, pilot FO P.M. Hill) in the Norwegian Sea. Six depth charges were dropped, but most overshoot and only one fell close enough to cause minor damage. U-1228 immediately crash dived after the attack, but the Schnorchel had been damaged and this resulted in a carbon monoxide poisoning of the crew, forcing the boat to abort its patrol. One man died. [Matrosenobergefreiter Matthias Mittler] (Sources: BdU KTB/Norman Franks)

1 recorded attack on this boat.

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus and sailed equipped with it in September 1944 but it was of course installed prior to that date. Read more about the Schnorchel and see list of fitted boats.

Men lost from the boat

18 Sep 1944
After being damaged by a Liberator (Sqdn 224/R) the boat suffered Schnorchel damage which resulted in a CO₂ poisoning of its crew. One man died. [Matrosenobergefreiter Matthias Mittler]

Related: For more info on such losses see - Men lost from U-boats -