|Ordered||20 Jan 1941|
|Laid down||20 Jan 1942||Howaldtswerke Hamburg AG, Hamburg (werk 822)|
|Launched||27 Feb 1943|
|Commissioned||8 May 1943||Oblt. Gerhard Haelbich|
|Successes||No ships sunk or damaged|
Salvaged on 9 November 1944, taken to Stavanger and decommissioned. The hulk was captured by British forces in May 1945 and broken up.
U-673 operated with the following Wolfpacks during its career:
Hartmut (23 Feb 1944 - 28 Feb 1944)
Attacks on this boat and other events
1 Apr 1944
The boat was attacked and damaged by a convoy escort, forcing it to return to base.
1 recorded attack on this boat.
This boat was fitted with a Schnorchel underwater-breathing apparatus in August 1944.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-673 did not suffer any casualties (we know of) until the time of her loss.
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