SM UB-73
Date Name Nationality Tonnage Fate
7 April 1918 Catriena Netherlands 115 Sunk
11 April 1918 Myrtle Branch United Kingdom 3,741 Sunk
14 April 1918 Chelford United Kingdom 2,995 Sunk
16 April 1918 Ladoga United Kingdom 1,917 Sunk
16 April 1918 Lodaner United Kingdom 3,291 Sunk
18 April 1918 Dalegarth Force United Kingdom 684 Sunk
23 June 1918 Mountain Laurel Norway 705 Sunk
24 June 1918 HMS D6 Royal Navy 495 Sunk
25 June 1918 Orissa United Kingdom 5,358 Sunk
Summary of raiding history
SM UB-73 was a German Type UB III submarine or U-boat in the German Imperial Navy () during World War I. She was commissioned into the German Imperial Navy on 2 October 1917 as SM UB-73. UB-73 was serving in the Mediterranean. On 21 November 1918 she was surrendered to France as required by the regulations of the Armistice with Germany.