'Kaub' was a German operation against the partisan forces of Marshal Josip Broz Tito in the area of the Sava river, destroying all the boats and other vessels used by the partisans, in the puppet state of Croatia in German-occupied Yugoslavia (12/19 February 1944).

The undertaking was intended to deny undetermined partisan forces the use of the Sava river by destroying all the boats and ferries in partisan hands along both banks of the river in the area to the north of Bosanska Gradiska. The German forces committed to the operation were elements of Generalleutnant Josef Brauner von Haydringen’s 42^nd Jägerdivision, and although these units located and destroyed some boats and ferries, they gained little or no contact with the partisans.