Allied warships hit during WWI
Below are all the Allied warships so marked in our databases.
| Loss date | Type | Name of ship | Tons | Nat. | | U-boat | Commander |
| 5 Sep, 1914 | Light cruiser | | Pathfinder (hms) | 2.940 |  | | U 21 | Otto Hersing |
| 22 Sep, 1914 | Armored cruiser | | Hogue (hms) | 12.000 |  | | U 9 | Otto Weddigen |
| 22 Sep, 1914 | Armored Cruiser | | Cressy (hms) | 12.000 |  | | U 9 | Otto Weddigen |
| 22 Sep, 1914 | Armored cruiser | | Aboukir (hms) | 12.000 |  | | U 9 | Otto Weddigen |
| 15 Oct, 1914 | Protected cruiser | | Hawke (hms) | 7.350 |  | | U 9 | Otto Weddigen |
| 31 Oct, 1914 | Seaplane carrier | | Hermes (hms) | 5.600 |  | | U 27 | Bernd Wegener |
| 11 Nov, 1914 | Minesweeper | | Niger (hms) | 810 |  | | U 12 | Walter Forstmann |
| 1 Jan, 1915 | Battleship |  | Formidable (hms) | 15.000 |  | | U 24 | Rudolf Schneider |
| 27 Apr, 1915 | Armored cruiser |  | Leon gambetta | 12.416 |  | | k.u.k. U5 | Georg Ritter von Trapp |
| 1 May, 1915 | Destroyer | | Recruit (hms) | 335 |  | | UB 6 | Erich Haecker |
| 25 May, 1915 | Battleship |  | Triumph (hms) | 11.985 |  | | U 21 | Otto Hersing |
| 1 Jun, 1915 | Destroyer | | Mohawk (hms) (d.) | 865 |  | | UC 11 | Walter Gottfried Schmidt |
| 4 Jun, 1915 | Minelayer | | Yenisei | 3.600 |  | | U 26 | Egewolf Frhr. von Berckheim |
| 9 Jun, 1915 | Light cruiser | | Dublin (hms) (d.) | 5.400 |  | | k.u.k. U4 | Rudolf Singule |
| 10 Jun, 1915 | Submarine | | Medusa | 245 |  | | UB 15 | Heino von Heimburg |
| 20 Jun, 1915 | Armored cruiser | | Roxburgh (hms) (d.) | 10.850 |  | | U 38 | Max Valentiner |
| 26 Jun, 1915 | Torpedo boat | | Torpediniere 5 pn | 120 |  | | k.u.k. U10 | Max Valentiner |
| 30 Jun, 1915 | Destroyer | | Lightning (hms) | 320 |  | | UC 1 | Egon von Werner |
| 5 Aug, 1915 | Submarine | | Nereide | 225 |  | | k.u.k. U5 | Georg Ritter von Trapp |
| 15 Aug, 1915 | Minelayer | | Lagoda | 6.136 |  | | UC 4 | Karl Vesper |
| 25 Oct, 1915 | Destroyer | | Velox (hms) | 380 |  | | UC 5 | Herbert Pustkuchen |
| 5 Nov, 1915 | Coast guard | | Nour-el-bahr (d.) | 450 |  | | U 35 | Waldemar Kophamel |
| 5 Nov, 1915 | Coast guard | | Abbas | 298 |  | | U 35 | Waldemar Kophamel |
| 4 Dec, 1915 | Destroyer | | Intrepido | 680 |  | | UC 14 | Cäsar Bauer |
| 29 Jan, 1916 | Destroyer | | Viking (hms) | 1.000 |  | | U | |
| 8 Feb, 1916 | Armored cruiser | | Amiral charner | 4.750 |  | | U 21 | Otto Hersing |
| 11 Feb, 1916 | Light cruiser | | Arethusa (hms) | 3.520 |  | | UC 7 | Georg Haag |
| 29 Feb, 1916 | Sloop | | Primula (hms) | 1.250 |  | | U 35 | Lothar von Arnauld de la Perière |
| 7 Mar, 1916 | Destroyer | | Coquette (hms) | 335 |  | | UC 10 | Alfred Nitzsche |
| 9 Mar, 1916 | Destroyer | | Lieutnant pushkin | 350 |  | | U 33 | Konrad Gansser |
| 18 Mar, 1916 | Torpedo boat | | Renaudin | 756 |  | | k.u.k. U6 | Hugo (Fleck) von Falkhausen |
| 25 Apr, 1916 | Destroyer | | Zhivuchi | 350 |  | | UC 15 | |
| 25 Apr, 1916 | Light cruiser | | Penelope (hms) (d.) | 3.750 |  | | UB 29 | Herbert Pustkuchen |
| 27 Apr, 1916 | Battleship | | Russell (hms) | 14.000 |  | | U 73 | Gustav Sieß |
| 27 Apr, 1916 | Sloop | | Nasturtium (hms) | 1.250 |  | | U 73 | Gustav Sieß |
| 5 Jun, 1916 | Armored cruiser | | Hampshire (hms) | 10.850 |  | | U 75 | Curt Beitzen |
| 23 Jun, 1916 | Destroyer | | Fourche | 745 |  | | k.u.k. U15 | Friedrich Fähndrich |
| 13 Aug, 1916 | Destroyer | | Lassoo (hms) | 1.010 |  | | UB 10 | Gustav Buch |
| 19 Aug, 1916 | Light cruiser | | Nottingham (hms) | 5.400 |  | | U 52 | Hans Walther |
| 19 Aug, 1916 | Light cruiser | | Falmouth (hms) | 5.250 |  | | U 63 | Otto Schultze |
| 2 Oct, 1916 | Sloop | | Rigel | 1.250 |  | | U 35 | Lothar von Arnauld de la Perière |
| 23 Oct, 1916 | Sloop | | Genista (hms) | 1.250 |  | | U 57 | Carl-Siegfried Ritter von Georg |
| 28 Oct, 1916 | Destroyer | | Kazanetz | 580 |  | | UC 27 | Karl Vesper |
| 1 Nov, 1916 | Torpedo boat | | Torpilleur 300 | 99 |  | | UC 26 | Matthias Graf von Schmettow |
| 7 Nov, 1916 | Destroyer | | Letun (d.) | 1.260 |  | | UC 27 | Karl Vesper |
| 8 Nov, 1916 | Destroyer | | Zulu (hms) | 1.027 |  | | UC 1 | Heinrich Küstner |
| 22 Nov, 1916 | Minesweeper | | Fugas | 150 |  | | UC 27 | Karl Vesper |
| 25 Nov, 1916 | Battleship |  | Suffren | 12.750 |  | | U 52 | Hans Walther |
| 6 Dec, 1916 | Minesweeper | | Shchit | 248 |  | | UC 25 | Johannes Feldkirchner |
| 12 Dec, 1916 | Battleship |  | Regina margherita (rin) | 13.427 |  | | UC 14 | Franz Becker |
| 27 Dec, 1916 | Battleship | | Gaulois | 11.100 |  | | UB 47 | Wolfgang Steinbauer |
| 28 Dec, 1916 | Torpedo boat | | Torpilleur 317 | 100 |  | | UC 1 | Oskar Steckelberg |
| 29 Dec, 1916 | Minesweeper | | Ludlow (hms) | 810 |  | | UC 6 | Werner von Zerboni di Sposetti |
| 9 Jan, 1917 | Battleship | | Cornwallis (hms) | 14.000 |  | | U 32 | Kurt Hartwig |
| 8 Feb, 1917 | Destroyer | | Ghurka (hms) | 880 |  | | UC 47 | Paul Hundius |
| 28 Feb, 1917 | Minelayer | | Cassini (mn) | 970 |  | | UC 35 | Ernst von Voigt |
| 12 Mar, 1917 | Destroyer | | Skate (hms) (d.) | 975 |  | | UC 69 | Erwin Waßner |
| 15 Mar, 1917 | Destroyer | | Foyle (hms) | 550 |  | | UC 68 | Hans Degetau |
| 17 Mar, 1917 | Sloop | | Mignonette (hms) | 1.250 |  | | UC 66 | Herbert Pustkuchen |
| 18 Mar, 1917 | Sloop | | Alyssum (hms) | 1.250 |  | | UC 66 | Herbert Pustkuchen |
| 19 Mar, 1917 | Battleship |  | Danton | 18.300 |  | | U 64 | Robert Moraht |
| 23 Mar, 1917 | Destroyer | | Laforey (hms) | 995 |  | | UB 12 | Ernst Steindorff |
| 31 Mar, 1917 | Sloop | | Carnation (hms) (d.) | 1.210 |  | | UC 42 | Otto Heinrich Tornow |
| 14 Apr, 1917 | Sloop | | Veronica (hms) (d.) | 1.200 |  | | UB 42 | Fritz Wernicke |
| 21 Apr, 1917 | Sloop | | Heather (hms) (d.) | 1.250 |  | | U 52 | Hans Walther |
| 2 May, 1917 | Destroyer | | Derwent (hms) | 555 |  | | UC 26 | Matthias Graf von Schmettow |
| 5 May, 1917 | Sloop | | Lavender (hms) | 1.200 |  | | UC 75 | Johannes Lohs |
| 10 Jun, 1917 | Protected cruiser | | Grafton (hms) (d.) | 7.350 |  | | UB 43 | Horst Obermüller |
| 11 Jun, 1917 | Destroyer | | Sakaki (d.) | 665 |  | | k.u.k. U27 | Robert Teufl von Fernland |
| 20 Jun, 1917 | Submarine | | Ariane | 414 |  | | UC 22 | Heino von Heimburg |
| 24 Jun, 1917 | Minesweeper | | Redcar | 810 |  | | UC 1 | Christian Mildenstein |
| 24 Jun, 1917 | Minesweeper | | Kempton | 810 |  | | UC 1 | Christian Mildenstein |
| 26 Jun, 1917 | Destroyer | | Doxa | 350 |  | | UB 47 | Hans Hermann Wendlandt |
| 27 Jun, 1917 | Armored cruiser | | Kleber | 7.578 |  | | UC 61 | Georg Gerth |
| 30 Jun, 1917 | Destroyer | | Cheerful (hms) | 370 |  | | UC 33 | Martin Schelle |
| 4 Jul, 1917 | Sloop | | Aster (hms) | 1.250 |  | | UC 25 | Johannes Feldkirchner |
| 4 Jul, 1917 | Sloop | | Azalea (hms) (d.) | 1.250 |  | | UC 25 | Johannes Feldkirchner |
| 6 Jul, 1917 | Destroyer | | Itchen (hms) | 550 |  | | UC 44 | Kurt Tebbenjohanns |
| 7 Jul, 1917 | Destroyer | | Ettrick (hms) (d.) | 570 |  | | UC 61 | Georg Gerth |
| 17 Jul, 1917 | Auxiliary minesweeper | | Newmarket | 833 |  | | UC 38 | Alfred Klatt |
| 26 Jul, 1917 | Minelayer | | Ariadne (hms) | 11.000 |  | | UC 65 | Otto Steinbrinck |
| 9 Aug, 1917 | Destroyer | | Recruit (hms) | 1.075 |  | | UB 16 | Wilhelm Rhein |
| 20 Aug, 1917 | Minesweeper | | Ilja muromets | 330 |  | | UC 59 | Herbert Lefholz |
| 18 Sep, 1917 | Destroyer | | Contest (hms) | 957 |  | | U 106 | Hans Hufnagel |
| 2 Oct, 1917 | Destroyer | | Brisk (hms) (d.) | 790 |  | | U 79 | Otto Rohrbeck |
| 2 Oct, 1917 | Armored cruiser |  | Drake (hms) | 14.300 |  | | U 79 | Otto Rohrbeck |
| 15 Oct, 1917 | Destroyer | | Cassin (uss) (d.) | 1.020 |  | | U 61 | Victor Dieckmann |
| 11 Nov, 1917 | Destroyer | | Staunch (hms) | 750 |  | | UC 38 | Hans Hermann Wendlandt |
| 11 Nov, 1917 | Monitor | | M.15 (hms) | 540 |  | | UC 38 | Hans Hermann Wendlandt |
| 18 Nov, 1917 | Sloop | | Candytuft (hms) | 1.290 |  | | U 39 | Heinrich Metzger |
| 27 Nov, 1917 | Torpedo boat | | Bjäditelny | 380 |  | | UC 58 | Karl Vesper |
| 6 Dec, 1917 | Destroyer | | Jacob jones (uss) | 1.050 |  | | U 53 | Hans Rose |
| 14 Dec, 1917 | Protected cruiser | | Chateaurenault | 8.018 |  | | UC 38 | Hans Hermann Wendlandt |
| 16 Dec, 1917 | Sloop | | Arbutus (hms) | 1.290 |  | | UB 65 | Martin Schelle |
| 30 Dec, 1917 | Destroyer | | Attack (hms) | 785 |  | | UC 34 | Horst Obermüller |
| 4 Jan, 1918 | Aux. minesweeper | | Goeland i (mn - ams) | 235 |  | | U 93 | Helmut Gerlach |
| 24 Mar, 1918 | Minelayer | | Partenope (rin) | 834 |  | | UC 67 | Karl Neumann |
| 27 Mar, 1918 | Destroyer | | Kale (hms) | 545 |  | | UC 11 | Reinhold Thomsen |
| 25 Apr, 1918 | Sloop | | Cowslip (hms) | 1.290 |  | | UB 105 | Wilhelm Marschall |
| 1 May, 1918 | Minesweeper | | Blackmorevale (hms) | 750 |  | | U 71 | Richard Scheurlen |
| 5 May, 1918 | Sloop | | Rhododendron (hms) | 1.290 |  | | U 70 | Otto Wünsche |
| 14 May, 1918 | Destroyer | | Phoenix (hms) | 765 |  | | k.u.k. U27 | Josef Holub |
| 31 May, 1918 | Destroyer | | Fairy (hms) | 355 |  | | UC 75 | Walter Schmitz |
| 16 Jul, 1918 | Sloop | | Anchusa (hms) | 1.290 |  | | U 54 | Hellmuth von Ruckteschell |
| 19 Jul, 1918 | Armored cruiser |  | San diego (uss) | 13.680 |  | | U 156 | Richard Feldt |
| 6 Aug, 1918 | Destroyer | | Comet (hms) | 747 |  | | U | |
| 7 Aug, 1918 | Armored cruiser | | Dupetit-thouars | 9.517 |  | | U 62 | Ernst Hashagen |
| 15 Aug, 1918 | Destroyer leader | | Scott (hms) | 1.801 |  | | UC 17 | Nikolaus Freiherr von Lyncker |
| 15 Aug, 1918 | Destroyer | | Ulleswater (hms) | 923 |  | | UC 17 | Nikolaus Freiherr von Lyncker |
| 30 Aug, 1918 | Protected cruiser | | Endymion (hms) (d.) | 7.350 |  | | UC 37 | Otto Kümpel |
| 20 Sep, 1918 | Submarine | | Circe | 351 |  | | k.u.k. U47 | Hugo Freiherr von Seyffertitz |
| 29 Sep, 1918 | Battleship |  | Minnesota (uss) (d.) | 18.000 |  | | U 117 | Otto Dröscher |
| 2 Oct, 1918 | Light cruiser | | Weymouth (hms) (d.) | 5.250 |  | | k.u.k. U31 | Hermann Rigele |
| 18 Oct, 1918 | Battleship |  | Voltaire (d.) | 18.400 |  | | UB 48 | Wolfgang Steinbauer |
| 9 Nov, 1918 | Battleship | | Britannia (hms) | 16.350 |  | | UB 50 | Heinrich Kukat |
| 10 Nov, 1918 | Minesweeper | | Ascot (hms) | 810 |  | | UB 67 | Hellmuth von Doemming |
Legend:
(d.) means the ship was damaged in the action.
116 instances of allied warships hit by U-boats
If you believe an allied warship is missing from this listing please let us know so we can edit its entry.
According to this, 96 warships were sunk or destroyed by German U-boats during WWII.