|Ordered||23 Mar 1942|
|Laid down||7 Jun 1943||Bremer Vulkan-Vegesacker Werft, Bremen-Vegesack (werk 68)|
|Launched||10 Jan 1944|
|Commissioned||16 Feb 1944||Oblt. Karl-Heinz Voswinkel|
|Successes||No ships sunk or damaged|
Sunk on 17 February 1945 in the Skagerak in Oslofjord off Horten, in position 59.24N, 10.32E, by an air-laid mine in the British minefield Onions IV. 43 dead and 8 survivors.
In 1946 the Norwegian Navy partly salvaged the wreck of this boat and destroyed the remains on the seabed.
This boat was fitted with a Schnorchel underwater-breathing apparatus and sailed equipped with it in February 1945 but it was of course installed prior to that date.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-1273 did not suffer any casualties (we know of) until the time of her loss.