British destroyer HMS Antelope attacked German submarine U-31 with depth charges, killing 2. Forced to the surface, the crew of U-31 scuttled the submarine before abandoning her. As HMS Antelope rescued the 43 German survivors, the wrecked hull of U-31 drifted into her, causing damage that would keep HMS Antelope under repair until Dec 1940. U-31 had previously been sunk by British aircraft on 11 Mar 1940, but was later raised and put back into action; she was the only German submarine to be sunk twice during the war.
