'Lachs' was a U-boat pair of minelaying operations in the Pechora and Barents Seas by Oberleutnant Otto Westphalen’s U-968 (29 August/10 September and 24 September/3 October 1944).

In the first of these lays, on 4 September, the boat laid 12 TMC mines off Mys Kanin Nos in the Pechora Sea, and in the second an unspecified number of mines in an unspecified location. None of the mines secured a victim.