Pic taken from publication PBM in action by squadron signal of the PBM that sank U-513 8guggenberger Knight Cross) and U-199 (Krauss) Also PBMs along with Venturas and B-18 Bolo's took part in the loges shootout between an U-boat and aircraft, when U-615 fought against nine a/c, shooting down one PBM damaging two more, but was eventually scuttled by its crew.