Shortly after midnight on 1 July 1943 the unescorted Tutoya (Master Acácio de Araújo Faria) was hit amidships by one torpedo from U-513 and sank by the bow with a heavy list to port in a few minutes about 6 miles from Iguape, São Paulo. The U-boat had chased another steamer, but lost contact in a rain squall and while searching for it found the much smaller Tutoya. The master and six crew members were lost. 17 survivors in a lifeboat and 6 men on a raft made landfall at the coast near Jureia and a second boat with 7 occupants was towed into the harbour of Santos by a motorboat.