Ships sunk or damaged by SM U-31[18] Date Name Tonnage Nationality 10 August 1917 Lealta 4,021 Italian 7 July 1918 Giuseppino Padre[2][Note 1] 67 Italian 2 October 1918 WeymouthHMS Weymouth* 5,250 British Sunk: Damaged: Total: 4,088 5,250 9,338