This is the full listing of all ships hit during April 1916. You can click on any of the links for further information on either ship, U-boat, commander or convoy.
| Date | U-boat | Commander | | Name of ship | Tons | Nat. |
| |
| 1 Apr 1916 | U 28 | Georg-Günther von Forstner | | Bengairn | 2,127 |  | br |
| 1 Apr 1916 | U 44 | Paul Wagenführ | | Ashburton | 4,445 |  | br |
| 1 Apr 1916 | UB 10 | Reinhold Saltzwedel | | Peter Hanre | 1,081 |  | nw |
| 1 Apr 1916 | UB 16 | Hans Valentiner | | Perth | 653 |  | br |
| 2 Apr 1916 | U 39 | Walter Forstmann | | Simla | 5,884 |  | br |
| 2 Apr 1916 | U 70 | Otto Wünsche | | Arena | 1,019 |  | nw |
| 2 Apr 1916 | UC 7 | Georg Haag | | Bourbaki (d.) | 2,208 |  | fr |
| 2 Apr 1916 | UC 7 | Georg Haag | | Commandant | 207 |  | br |
| 3 Apr 1916 | U 33 | Konrad Gansser | | Enrichetta | 442 |  | ru |
| 3 Apr 1916 | U 34 | Claus Rücker | | Ellaston | 3,796 |  | br |
| 3 Apr 1916 | U 34 | Claus Rücker | | Sneaton | 3,470 |  | br |
| 3 Apr 1916 | U 39 | Walter Forstmann | | Clan Campbell | 5,897 |  | br |
| 3 Apr 1916 | UB 16 | Hans Valentiner | | Elziena Helena (d.) | 131 |  | nl |
| 3 Apr 1916 | UC 10 | Alfred Nitzsche | | Ino | 702 |  | nw |
| 4 Apr 1916 | U 39 | Walter Forstmann | | Giuseppe Padre | 184 |  | it |
| 4 Apr 1916 | U 39 | Walter Forstmann | | Maria Carmella Findari | 42 |  | it |
| 4 Apr 1916 | UC 1 | Egon von Werner | | Bendew | 3,681 |  | br |
| 5 Apr 1916 | U 34 | Claus Rücker | | Chantala | 4,951 |  | br |
| 5 Apr 1916 | U 66 | Thorwald von Bothmer | | Zent | 3,890 |  | br |
| 5 Apr 1916 | UB 18 | Otto Steinbrinck | | Baus | 1,287 |  | nw |
| 5 Apr 1916 | UB 18 | Otto Steinbrinck | | Jeannette | 159 |  | fr |
| 6 Apr 1916 | U 22 | Bruno Hoppe | | Vennacher (d.) | 4,700 |  | br |
| 6 Apr 1916 | U 34 | Claus Rücker | | Yonne | 4,039 |  | br |
| 6 Apr 1916 | U 39 | Walter Forstmann | | Colbert (d.) | 5,394 |  | fr |
| 6 Apr 1916 | U 39 | Walter Forstmann | | Stjerneborg | 1,592 |  | da |
| 6 Apr 1916 | U 66 | Thorwald von Bothmer | | Binicaise | 151 |  | fr |
| 6 Apr 1916 | UB 29 | Herbert Pustkuchen | | Asger Ryg | 1,134 |  | da |
| 6 Apr 1916 | UB 29 | Herbert Pustkuchen | | Vesuvio | 1,391 |  | br |
| 7 Apr 1916 | U 66 | Thorwald von Bothmer | | Rijndijk (d.) | 3,557 |  | nl |
| 7 Apr 1916 | U 66 | Thorwald von Bothmer | | Sainte Marie | 397 |  | fr |
| 7 Apr 1916 | UB 18 | Otto Steinbrinck | | Clyde | 204 |  | br |
| 7 Apr 1916 | UB 18 | Otto Steinbrinck | | Eemdijk (d.) | 3,048 |  | nl |
| 7 Apr 1916 | UB 29 | Herbert Pustkuchen | | Braunton | 4,575 |  | br |
| 7 Apr 1916 | UB 29 | Herbert Pustkuchen | | Marguerite | 42 |  | fr |
| 7 Apr 1916 | UC 6 | Matthias Graf von Schmettow | | Halcyon | 1,319 |  | br |
| 8 Apr 1916 | U 22 | Bruno Hoppe | | Adamton | 2,304 |  | br |
| 8 Apr 1916 | U 34 | Claus Rücker | | Zafra | 3,578 |  | br |
| 8 Apr 1916 | U 66 | Thorwald von Bothmer | | Santanderino | 3,346 |  | sp |
| 8 Apr 1916 | UB 7 | Wilhelm Werner | | Sal’dagan | 75 |  | ru |
| 9 Apr 1916 | U 39 | Walter Forstmann | | Caledonia | 1,815 |  | da |
| 9 Apr 1916 | U 66 | Thorwald von Bothmer | | Eastern City | 4,341 |  | br |
| 9 Apr 1916 | U 66 | Thorwald von Bothmer | | Glenalmond | 2,888 |  | br |
| 9 Apr 1916 | U 66 | Thorwald von Bothmer | | Sjolyst | 997 |  | nw |
| 9 Apr 1916 | UB 7 | Wilhelm Werner | | Gryoza | 119 |  | ru |
| 9 Apr 1916 | UC 7 | Georg Haag | | Avon | 1,574 |  | br |
| 10 Apr 1916 | U 66 | Thorwald von Bothmer | | Margam Abbey | 4,471 |  | br |
| 10 Apr 1916 | U 66 | Thorwald von Bothmer | | Unione | 2,367 |  | it |
| 10 Apr 1916 | UB 12 | Wilhelm Kiel | | Silksworth Hall | 4,777 |  | br |
| 10 Apr 1916 | UB 16 | Paul Hundius | | Robert Adamson | 2,978 |  | br |
| 11 Apr 1916 | U 34 | Claus Rücker | | Angus | 3,619 |  | br |
| 11 Apr 1916 | U 34 | Claus Rücker | | Imperator (d.) | 394 |  | ru |
| 11 Apr 1916 | U 73 | Gustav Sieß | | Inverlyon | 1,827 |  | br |
| 12 Apr 1916 | U 34 | Claus Rücker | | Orlock Head | 1,945 |  | br |
| 12 Apr 1916 | U 34 | Claus Rücker | | Vega | 2,957 |  | fr |
| 12 Apr 1916 | UB 13 | Arthur Metz | | Prøven | 276 |  | da |
| 12 Apr 1916 | UC 1 | Egon von Werner | | Colombia (d.) | 5,644 |  | nl |
| 13 Apr 1916 | U 22 | Bruno Hoppe | | Chic | 3,037 |  | br |
| 13 Apr 1916 | U 39 | Walter Forstmann | | Lipari | 1,539 |  | it |
| 14 Apr 1916 | UC 6 | Matthias Graf von Schmettow | | Shenandoah | 3,886 |  | br |
| 14 Apr 1916 | UC 7 | Georg Haag | | Alberta | 209 |  | br |
| 14 Apr 1916 | UC 7 | Georg Haag | | Orcades | 270 |  | br |
| 15 Apr 1916 | U 69 | Ernst Wilhelms | | Fairport | 3,838 |  | br |
| 15 Apr 1916 | U 69 | Ernst Wilhelms | | Schwanden | 844 |  | ru |
| 15 Apr 1916 | UC 7 | Georg Haag | | Tusnastabb | 859 |  | nw |
| 16 Apr 1916 | U 67 | Hans Nieland | | Cardonia | 2,169 |  | br |
| 16 Apr 1916 | U 69 | Ernst Wilhelms | | Glendoon | 1,918 |  | nw |
| 16 Apr 1916 | U 69 | Ernst Wilhelms | | Harrovian | 4,309 |  | br |
| 16 Apr 1916 | U 69 | Ernst Wilhelms | | Papelera | 1,591 |  | nw |
| 17 Apr 1916 | U 69 | Ernst Wilhelms | | Ernest Reyer | 2,708 |  | fr |
| 17 Apr 1916 | U 73 | Gustav Sieß | | Terje Viken | 3,579 |  | nw |
| 18 Apr 1916 | U 69 | Ernst Wilhelms | | Ravenhill | 1,826 |  | br |
| 20 Apr 1916 | U 67 | Hans Nieland | | Whitgift | 4,397 |  | br |
| 20 Apr 1916 | U 69 | Ernst Wilhelms | | Cairngowan | 4,017 |  | br |
| 20 Apr 1916 | U 74 | Erwin Weisbach | | Sabbia | 2,802 |  | br |
| 20 Apr 1916 | UC 1 | Kurt Ramien | | Lodewijk Van Nassau | 3,350 |  | nl |
| 21 Apr 1916 | U 19 | Raimund Weisbach | | Feliciana | 4,283 |  | br |
| 21 Apr 1916 | UC 6 | Matthias Graf von Schmettow | | Estafette | 267 |  | fr |
| 22 Apr 1916 | U 19 | Raimund Weisbach | | Jozsef Agost Foherzeg | 2,680 |  | it |
| 22 Apr 1916 | U 19 | Raimund Weisbach | | Ross | 2,666 |  | br |
| 22 Apr 1916 | U 67 | Hans Nieland | | Chanaral | 2,423 |  | fr |
| 22 Apr 1916 | UB 16 | Paul Hundius | | Tregantle | 3,091 |  | br |
| 23 Apr 1916 | U 19 | Raimund Weisbach | | Parisiana | 4,763 |  | br |
| 23 Apr 1916 | U 19 | Raimund Weisbach | | Ribston | 3,048 |  | br |
| 23 Apr 1916 | UC 7 | Georg Haag | | Lena Melling | 274 |  | br |
| 24 Apr 1916 | | | | Maashaven | 2,609 |  | nl |
| 25 Apr 1916 | U 19 | Raimund Weisbach | | Carmanian | 1,840 |  | nw |
| 25 Apr 1916 | UB 18 | Otto Steinbrinck | | E 22 | 725 |  | br |
| 25 Apr 1916 | UB 29 | Herbert Pustkuchen | | Berkelstroom | 736 |  | nl |
| 25 Apr 1916 | UB 29 | Herbert Pustkuchen | | Penelope (d.) | 3,750 |  | br |
| 25 Apr 1916 | UC 15 | Albrecht von Dewitz | | Sv. Georgiy Pobedonosets | 112 |  | ru |
| 25 Apr 1916 | UC 15 | Albrecht von Dewitz | | Zhivuchi | 350 |  | ru |
| 26 Apr 1916 | UB 18 | Otto Steinbrinck | | Alfred | 24 |  | br |
| 26 Apr 1916 | UC 10 | Alfred Nitzsche | | Dubhe (d.) | 3,233 |  | nl |
| 26 Apr 1916 | UC 10 | Alfred Nitzsche | | Noordzee | 298 |  | nl |
| 27 Apr 1916 | U 45 | Erich Sittenfeld | | Industry | 4,044 |  | br |
| 27 Apr 1916 | U 73 | Gustav Sieß | | Nasturtium | 1,250 |  | br |
| 27 Apr 1916 | U 73 | Gustav Sieß | | Russell | 14,000 |  | br |
| 28 Apr 1916 | U 33 | Konrad Gansser | | Anzhelika | 170 |  | ru |
| 28 Apr 1916 | U 33 | Konrad Gansser | | Lyusya | 50 |  | ru |
| 28 Apr 1916 | U 33 | Konrad Gansser | | Unidentified Sailing Vessel | 300 |  | ru |
| 28 Apr 1916 | U 73 | Gustav Sieß | | Aegusa | 1,242 |  | br |
| 28 Apr 1916 | UB 27 | Victor Dieckmann | | Blessing | 19 |  | br |
| 28 Apr 1916 | UB 27 | Victor Dieckmann | | Christian (d.) | 227 |  | da |
| 29 Apr 1916 | UB 27 | Victor Dieckmann | | Teal | 766 |  | br |
| 29 Apr 1916 | UB 27 | Victor Dieckmann | | Wandle (d.) | 889 |  | br |
| 29 Apr 1916 | UC 6 | Matthias Graf von Schmettow | | Saint Corentin | 216 |  | fr |
| 30 Apr 1916 | U 20 | Walther Schwieger | | Bakio | 1,906 |  | sp |
| 30 Apr 1916 | U 21 | Otto Hersing | | City Of Lucknow | 3,669 |  | br |
| 30 Apr 1916 | U 45 | Erich Sittenfeld | | Vinifreda | 1,441 |  | sp |
| 30 Apr 1916 | UB 27 | Victor Dieckmann | | Mod | 664 |  | nw |
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| 245,264 | | | 98 ships sunk (212,089 tons) and 12 ships damaged (33,175 tons). Legend (d.) means the ship was damaged.
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This map shows where Allied ships were hit during April 1916.

In some cases the exact positions of losses are not known, those are not shown.