September 1915
This is the full listing of all ships hit during September 1915. 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 Sep 1915 | U 33 | Konrad Gansser | | Whitefield | 2,422 |  | br |
| 1 Sep 1915 | UC 7 | Franz Wäger | | Malta | 138 |  | br |
| 1 Sep 1915 | UC 7 | Franz Wäger | | Nadine | 150 |  | br |
| 1 Sep 1915 | UC 7 | Franz Wäger | | Savona | 1,180 |  | br |
| 2 Sep 1915 | U 20 | Walther Schwieger | | Roumanie | 2,599 |  | br |
| 2 Sep 1915 | U 39 | Walter Forstmann | | William T. Lewis (d.) | 2,166 |  | br |
| 2 Sep 1915 | UB 14 | Heino von Heimburg | | Southland (d.) | 11,899 |  | br |
| 3 Sep 1915 | U 20 | Walther Schwieger | | Frode | 1,875 |  | da |
| 3 Sep 1915 | UC 7 | Franz Wäger | | Churston | 2,470 |  | br |
| 4 Sep 1915 | U 20 | Walther Schwieger | | Hesperian | 10,920 |  | br |
| 4 Sep 1915 | U 33 | Konrad Gansser | | Cymbeline | 4,505 |  | br |
| 4 Sep 1915 | U 33 | Konrad Gansser | | Glimt | 955 |  | nw |
| 4 Sep 1915 | U 33 | Konrad Gansser | | Mimosa | 3,466 |  | br |
| 4 Sep 1915 | U 33 | Konrad Gansser | | Storesand | 1,639 |  | nw |
| 4 Sep 1915 | U 34 | Claus Rücker | | Natal Transport | 4,107 |  | br |
| 5 Sep 1915 | U 20 | Walther Schwieger | | Dictator | 4,116 |  | br |
| 5 Sep 1915 | U 20 | Walther Schwieger | | Douro | 1,604 |  | br |
| 5 Sep 1915 | U 20 | Walther Schwieger | | Rhea | 1,145 |  | ru |
| 6 Sep 1915 | U 20 | Walther Schwieger | | Guatemala | 5,913 |  | fr |
| 6 Sep 1915 | U 33 | Konrad Gansser | | John Hardie | 4,372 |  | br |
| 7 Sep 1915 | U 20 | Walther Schwieger | | Bordeaux | 4,604 |  | fr |
| 7 Sep 1915 | U 20 | Walther Schwieger | | Caroni | 2,652 |  | br |
| 7 Sep 1915 | UB 16 | Hans Valentiner | | Emblem | 50 |  | br |
| 7 Sep 1915 | UB 16 | Hans Valentiner | | Victorious | 43 |  | br |
| 7 Sep 1915 | UB 2 | Werner Fürbringer | | Constance | 57 |  | br |
| 7 Sep 1915 | UB 2 | Werner Fürbringer | | Emmanuel | 44 |  | br |
| 8 Sep 1915 | U 20 | Walther Schwieger | | Mora | 3,047 |  | br |
| 8 Sep 1915 | U 34 | Claus Rücker | | Indien | 800 |  | fr |
| 8 Sep 1915 | UC 5 | Herbert Pustkuchen | | Monarch | 1,122 |  | br |
| 9 Sep 1915 | U 39 | Walter Forstmann | | Cornubia | 1,736 |  | br |
| 9 Sep 1915 | U 39 | Walter Forstmann | | L’Aude | 2,232 |  | fr |
| 9 Sep 1915 | U 39 | Walter Forstmann | | Ville De Mostaganem | 2,648 |  | fr |
| 9 Sep 1915 | UC 1 | Egon von Werner | | Balakani | 3,696 |  | br |
| 10 Sep 1915 | U 6 | Reinhold Lepsius | | Presto | 206 |  | nw |
| 10 Sep 1915 | UB 16 | Hans Valentiner | | Nimrod | 51 |  | br |
| 10 Sep 1915 | UB 2 | Werner Fürbringer | | Boy Ernie | 47 |  | br |
| 11 Sep 1915 | U 6 | Reinhold Lepsius | | Randulf Hansen (p.) | 1,287 |  | nw |
| 11 Sep 1915 | U 6 | Reinhold Lepsius | | Wansbeck | 462 |  | nw |
| 12 Sep 1915 | U 6 | Reinhold Lepsius | | Bien | 120 |  | nw |
| 12 Sep 1915 | UC 3 | Erwin Weisbach | | Ashmore | 2,519 |  | br |
| 13 Sep 1915 | U 6 | Reinhold Lepsius | | Norte | 216 |  | nw |
| 15 Sep 1915 | UB 7 | Wilhelm Werner | | Patagonia | 6,011 |  | br |
| 16 Sep 1915 | UC 4 | Karl Vesper | | Linnea (n-1) | 739 |  | ru |
| 16 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Africa | 1,038 |  | br |
| 17 Sep 1915 | U 35 | Waldemar Kophamel | | Ravitailleur | 2,815 |  | fr |
| 18 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Lydian | 244 |  | br |
| 18 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | San Zeferino (d.) | 6,430 |  | br |
| 19 Sep 1915 | U 35 | Waldemar Kophamel | | Ramazan | 3,477 |  | br |
| 19 Sep 1915 | UC 5 | Herbert Pustkuchen | | Tord (d.) | 1,313 |  | sw |
| 20 Sep 1915 | U 16 | Leo Hillebrand | | Thorvaldsen | 1,220 |  | da |
| 20 Sep 1915 | U 35 | Waldemar Kophamel | | Linkmoor | 4,306 |  | br |
| 20 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Horden | 1,434 |  | br |
| 22 Sep 1915 | UC 7 | Franz Wäger | | Koningin Emma | 9,181 |  | nl |
| 23 Sep 1915 | U 41 | Claus Hansen | | Anglo-colombian | 4,792 |  | br |
| 23 Sep 1915 | U 41 | Claus Hansen | | Chancellor | 4,586 |  | br |
| 23 Sep 1915 | U 41 | Claus Hansen | | Hesione | 3,363 |  | br |
| 23 Sep 1915 | UB 17 | Ralph Wenninger | | Saint Pierre I | 303 |  | fr |
| 23 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Groningen | 988 |  | br |
| 24 Sep 1915 | U 41 | Claus Hansen | | Urbino | 6,651 |  | br |
| 24 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Great Heart | 78 |  | br |
| 26 Sep 1915 | U 16 | Leo Hillebrand | | Ellen Benzon | 143 |  | da |
| 26 Sep 1915 | UC 7 | Franz Wäger | | Vigilant | 69 |  | br |
| 27 Sep 1915 | UC 6 | Matthias Graf von Schmettow | | Nigretia (d.) | 3,187 |  | br |
| 28 Sep 1915 | U 39 | Walter Forstmann | | H. C. Henry | 4,219 |  | ca |
| 29 Sep 1915 | U 16 | Leo Hillebrand | | Actie | 562 |  | nw |
| 29 Sep 1915 | U 16 | Leo Hillebrand | | Flora | 184 |  | nw |
| 29 Sep 1915 | U 39 | Walter Forstmann | | Haydn | 3,923 |  | br |
| 30 Sep 1915 | U 16 | Leo Hillebrand | | Florida | 558 |  | nw |
| 30 Sep 1915 | U 33 | Konrad Gansser | | Tobia | 185 |  | it |
| 30 Sep 1915 | U 39 | Walter Forstmann | | Cirene | 3,236 |  | it |
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| 170,515 | | | 65 ships sunk (145,520 tons) and 5 ships damaged (24,995 tons). Legend (d.) means the ship was damaged. (p.) means the ship was taken as prize (included in ships & tonnage lost).
We have a picture of this vessel.
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This map shows where Allied ships were hit during September 1915.

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