Operation Butt

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'Butt' was a German naval minelaying operation by Kapitšnleutnant Hans-Dieter Mohs’s U-956 in the Pechora Sea area of the Arctic Ocean (29 August/5 September 1944).

The boat laid 12 TMC mines between 03.01 and 05.00 on 3 September in the Beluschya Bay area of the southern Pechora Sea, and as far as is known none of these mines sank any ship.