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This is the full listing of all ships hit during September 1917. 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 1917	U 19	Johannes Spieß		Akaroa	1,348		nw
1 Sep 1917	U 28	Georg Schmidt		Dront	3,488		ru
1 Sep 1917	U 52	Hans Walther		Tarapaca	2,506		fr
1 Sep 1917	UC 65	Max Viebeg		Peronne	3,342		fr
1 Sep 1917	UC 69	Hugo Thielmann		Erato	2,041		br
1 Sep 1917	UC 74	Wilhelm Marschall		Amiral Olry	5,567		fr
2 Sep 1917	U 28	Georg Schmidt		Olive Branch	4,649		br
2 Sep 1917	U 52	Hans Walther		Wentworth	3,828		br
2 Sep 1917	UB 49	Hans von Mellenthin		Caracas	1,077		nw
2 Sep 1917	UC 49	Karl Petri		Dundee	2,187		br
2 Sep 1917	UC 69	Hugo Thielmann		Ker Durand	56		fr
2 Sep 1917	UC 69	Hugo Thielmann		Rytonhall	4,203		br
3 Sep 1917				Begonia	1,250		br
3 Sep 1917	U 75	Fritz Schmolling		Treverbyn	4,163		br
3 Sep 1917	U 95	Athalwin Prinz		Majoren	2,747		nw
3 Sep 1917	UB 30	Wilhelm Rhein		Ragnhild	1,495		br
3 Sep 1917	UC 50	Rudolf Seuffer		La Negra	8,312		br
3 Sep 1917	UC 74	Wilhelm Marschall		Agios Andreas	68		gr
4 Sep 1917	U 52	Hans Walther		Peerless	3,112		br
4 Sep 1917	UB 49	Hans von Mellenthin		Theodora	2,899		gr
4 Sep 1917	UC 16	Georg Reimarus		Bishopston	2,513		br
4 Sep 1917	UC 69	Hugo Thielmann		Sadi Carnot	354		fr
5 Sep 1917				Margaret	12		br
5 Sep 1917	U 52	Hans Walther		Echunga	6,285		br
5 Sep 1917	U 52	Hans Walther		San Dunstano (d.)	6,220		br
5 Sep 1917	U 63	Heinrich Metzger		Proletaire	101		fr
5 Sep 1917	UB 10	Fritz Gregor		Jeannot	50		be
5 Sep 1917	UB 10	Fritz Gregor		Unity	56		br
5 Sep 1917	UC 4	Erich Hecht		Eros	286		br
5 Sep 1917	UC 42	Hans Albrecht Müller		Glynn	78		br
5 Sep 1917	UC 42	Hans Albrecht Müller		Industry	91		br
5 Sep 1917	UC 50	Rudolf Seuffer		Emma	73		br
5 Sep 1917	UC 50	Rudolf Seuffer		Florence Muspratt	79		br
5 Sep 1917	UC 50	Rudolf Seuffer		Frances	89		br
5 Sep 1917	UC 50	Rudolf Seuffer		Theodor	230		br
5 Sep 1917	UC 69	Hugo Thielmann		Alesia (d.)	6,006		fr
6 Sep 1917	U 80	Gustav Amberger		Tuskar	1,159		br
6 Sep 1917	UB 10	Fritz Gregor		Rosary	37		br
6 Sep 1917	UB 35	Karl Stöter		Thisbe	1,091		fr
6 Sep 1917	UB 49	Hans von Mellenthin		Moina	168		fr
6 Sep 1917	UB 62	Bernhard Putzier		Hammar Ii	206		sw
6 Sep 1917	UC 23	Volkhard von Bothmer		Helgian	220		br
6 Sep 1917	UC 50	Rudolf Seuffer		Alesia	6,006		fr
6 Sep 1917	UC 71	Reinhold Saltzwedel		Elisabethville	7,017		be
6 Sep 1917	UC 74	Wilhelm Marschall		Agios Georgios	897		gr
6 Sep 1917	UC 74	Wilhelm Marschall		Ville De Strasbourg	2,167		fr
7 Sep 1917	U 48	Karl Edeling		Minnehaha	13,714		br
7 Sep 1917	UB 34	Hellmuth von Ruckteschell		Grelfryda (d.)	5,136		br
7 Sep 1917	UB 35	Karl Stöter		Haakon Vii	2,175		nw
7 Sep 1917	UB 49	Hans von Mellenthin		Brodmead (d.)	5,646		br
7 Sep 1917	UB 49	Hans von Mellenthin		Casa Blanca	31		pt
7 Sep 1917	UB 49	Hans von Mellenthin		Clan Ferguson	4,808		br
7 Sep 1917	UB 49	Hans von Mellenthin		Hunsbridge	3,424		br
7 Sep 1917	UC 16	Georg Reimarus		Hinemoa	2,283		br
7 Sep 1917	UC 16	Georg Reimarus		Vestfjeld	2,063		nw
7 Sep 1917	UC 23	Volkhard von Bothmer		By George	225		br
7 Sep 1917	UC 50	Rudolf Seuffer		Versailles	70		fr
7 Sep 1917	UC 54	Heinrich XXXVII Prinz Reuß zu Köstritz		Myrmidon (d.)	4,965		br
7 Sep 1917	UC 71	Reinhold Saltzwedel		Kleber (d.)	277		fr
7 Sep 1917	UC 71	Reinhold Saltzwedel		Mont De Piete	38		fr
7 Sep 1917	UC 77	Reinhard von Rabenau		Scottish Prince (d.)	2,897		br
8 Sep 1917	UB 31	Thomas Bieber		Elizabeth	49		br
8 Sep 1917	UB 34	Hellmuth von Ruckteschell		Aladdin	753		nw
8 Sep 1917	UB 35	Karl Stöter		Armorique	144		fr
8 Sep 1917	UB 35	Karl Stöter		Blanche	160		fr
8 Sep 1917	UB 35	Karl Stöter		Meeta	144		ru
8 Sep 1917	UB 41	Günther Krause		Harrow	1,777		br
8 Sep 1917	UB 50	Franz Becker		William H. Clifford	1,593		am
8 Sep 1917	UC 17	Ulrich Pilzecker		Askelad	2,823		nw
8 Sep 1917	UC 31	Kurt Siewert		Newholm	3,399		br
8 Sep 1917	UC 40	Hermann Menzel		Family’s Pride	39		br
8 Sep 1917	UC 51	Hans Galster		Ezel	163		br
8 Sep 1917	UC 51	Hans Galster		Laura	104		br
8 Sep 1917	UC 71	Reinhold Saltzwedel		Setubal	1,201		nw
9 Sep 1917	U 48	Karl Edeling		Elsa	1,236		da
9 Sep 1917	UB 31	Thomas Bieber		Pluton	1,449		nw
9 Sep 1917	UC 17	Ulrich Pilzecker		Tuscarora (d.)	7,106		br
9 Sep 1917	UC 40	Hermann Menzel		Swiftsure	823		br
9 Sep 1917	UC 71	Reinhold Saltzwedel		Myosotis (d.)	1,250		br
10 Sep 1917	UC 14	Helmut Lorenz		Loch Ard	225		br
10 Sep 1917	UC 40	Hermann Menzel		Margarita (d.)	2,788		br
10 Sep 1917	UC 40	Hermann Menzel		Parkmill	1,316		br
10 Sep 1917	UC 51	Hans Galster		Jane Williamson	197		br
10 Sep 1917	UC 51	Hans Galster		Mary Orr	91		br
10 Sep 1917	UC 51	Hans Galster		Mary Seymour	150		br
10 Sep 1917	UC 51	Hans Galster		Moss Rose	161		br
10 Sep 1917	UC 51	Hans Galster		Water Lily	111		br
10 Sep 1917	UC 58	Karl Vesper		Sims	unknown		ru
10 Sep 1917	UC 71	Reinhold Saltzwedel		Vikholmen	494		nw
10 Sep 1917	UC 77	Reinhard von Rabenau		Ioanna (d.)	3,459		br
11 Sep 1917	U 49	Richard Hartmann		Vienna	4,170		br
11 Sep 1917	U 52	Hans Walther		Tobol	3,741		ru
11 Sep 1917	U 63	Heinrich Metzger		Embleton	5,377		br
11 Sep 1917	UC 31	Kurt Siewert		Cento (d.)	3,708		br
11 Sep 1917	UC 51	Hans Galster		Luxembourg	1,417		br
11 Sep 1917	UC 51	Hans Galster		Rosy Cross	25		br
11 Sep 1917	UC 51	Hans Galster		William	78		br
12 Sep 1917	U 103	Claus Rücker		St. Margaret	943		br
12 Sep 1917	U 19	Johannes Spieß		Agricola	65		br
12 Sep 1917	U 63	Heinrich Metzger		Reim	1,126		nw
12 Sep 1917	U 64	Robert Moraht		Gisla	2,118		nw
12 Sep 1917	U 64	Robert Moraht		Urd	3,049		br
12 Sep 1917	U 64	Robert Moraht		Wilmore	5,395		am
12 Sep 1917	UB 50	Franz Becker		HS 3	121		br
12 Sep 1917	UB 50	Franz Becker		Rb 10	800		br
12 Sep 1917	UC 27	Gerhard Schulz		Gibraltar	3,803		br
12 Sep 1917	UC 40	Hermann Menzel		Asia	309		br
12 Sep 1917	UC 40	Hermann Menzel		Glenelg (d.)	4,160		br
13 Sep 1917	UB 50	Franz Becker		Correiro De Sines	32		pt
13 Sep 1917	UB 50	Franz Becker		Gomizianes Da Graça Odemira	32		pt
13 Sep 1917	UC 34	Horst Obermüller		Bengali (d.)	5,684		br
13 Sep 1917	UC 52	Ludwig Karl Sahl		Arlequin	6		tu
13 Sep 1917	UC 52	Ludwig Karl Sahl		Chere Rose	28		tu
13 Sep 1917	UC 52	Ludwig Karl Sahl		Ortigia	17		tu
13 Sep 1917	UC 52	Ludwig Karl Sahl		Vittoria	24		tu
14 Sep 1917	U 64	Robert Moraht		Amiral De Kersaint	5,570		fr
14 Sep 1917	U 64	Robert Moraht		Ausonia	1,438		it
14 Sep 1917	U 64	Robert Moraht		Chulmleigh	4,911		br
14 Sep 1917	UB 50	Franz Becker		Sado	196		pt
14 Sep 1917	UC 51	Hans Galster		Zeta	2,269		br
15 Sep 1917	U 48	Karl Edeling		Rollesby	3,955		br
15 Sep 1917	U 63	Heinrich Metzger		Platuria	3,445		am
15 Sep 1917	U 67	Hans Nieland		Idomeneus (d.)	6,692		br
15 Sep 1917	UB 38	Wilhelm Amberger		Dependence	120		br
15 Sep 1917	UB 63	Rudolf Gebeschus		Santaren	4,256		br
15 Sep 1917	UC 51	Hans Galster		Saint Jacques	2,459		fr
15 Sep 1917	UC 53	Kurt Albrecht		Cavi (d.)	2,544		it
15 Sep 1917	UC 69	Hugo Thielmann		Sommeina	3,317		br
16 Sep 1917	U 54	Kurt Heeseler		Arabis	3,928		br
16 Sep 1917	UB 18	Ulrich Meier		Facto	2,372		nw
16 Sep 1917	UC 17	Ulrich Pilzecker		Thomas Krag (d.)	4,569		nw
16 Sep 1917	UC 21	Werner von Zerboni di Sposetti		Ann J. Trainer	426		am
16 Sep 1917	UC 27	Gerhard Schulz		Annina Capano	250		it
16 Sep 1917	UC 31	Kurt Siewert		Quatre Freres	53		fr
16 Sep 1917	UC 48	Kurt Ramien		Sandsend	3,814		br
16 Sep 1917	UC 64	Erich Hecht		Eendracht Vii	251		nl
17 Sep 1917				Taxiarchis	290		gr
17 Sep 1917	U 54	Kurt Heeseler		Niemen	1,888		fr
17 Sep 1917	UB 62	Bernhard Putzier		Australia	3,592		ru
17 Sep 1917	UB 62	Bernhard Putzier		Queen Amelia	4,278		br
17 Sep 1917	UC 27	Gerhard Schulz		Eugenio D.	99		it
17 Sep 1917	UC 27	Gerhard Schulz		Muccio	137		it
17 Sep 1917	UC 48	Kurt Ramien		Our Bairns	38		br
17 Sep 1917	UC 48	Kurt Ramien		Ronald	38		br
17 Sep 1917	UC 64	Erich Hecht		Paraciers	2,542		fr
18 Sep 1917				Domenico Primo	80		it
18 Sep 1917	U 106	Hans Hufnagel		City Of Lincoln (d.)	5,867		br
18 Sep 1917	U 106	Hans Hufnagel		Contest	957		br
18 Sep 1917	U 43	Waldemar Bender		Glenfoyle	1,680		br
18 Sep 1917	U 63	Heinrich Metzger		Arendal	1,387		br
18 Sep 1917	UB 50	Franz Becker		Polar Prince	3,611		br
18 Sep 1917	UB 62	Bernhard Putzier		Joseph Chamberlain	3,709		br
18 Sep 1917	UC 52	Ludwig Karl Sahl		Cachalot	17		tu
18 Sep 1917	UC 53	Kurt Albrecht		Domenico Primo (d.)	80		it
19 Sep 1917	U 151	Waldemar Kophamel		Blanche	3,104		fr
19 Sep 1917	U 54	Kurt Heeseler		Marthe Marguerite	588		fr
19 Sep 1917	U 82	Hans Adam		Saint Ronald	4,387		br
19 Sep 1917	U 94	Alfred Saalwächter		Hydra	174		da
19 Sep 1917	UC 48	Kurt Ramien		Etal Manor	1,875		br
19 Sep 1917	UC 53	Kurt Albrecht		Teresita	136		it
20 Sep 1917				Marie Jeanne	188		fr
20 Sep 1917	U 32	Kurt Hartwig		Kurdistan	3,720		br
20 Sep 1917	UB 50	Franz Becker		Fabian	2,246		br
20 Sep 1917	UB 50	Franz Becker		Gioffredo Mameli	4,124		it
21 Sep 1917	UB 38	Wilhelm Amberger		Aline Montreuil	1,624		fr
21 Sep 1917	UB 40	Hans Howaldt		Radaas	2,524		da
21 Sep 1917	UC 23	Volkhard von Bothmer		Santo Nicola	159		it
21 Sep 1917	UC 23	Volkhard von Bothmer		Spiridon	128		gr
21 Sep 1917	UC 48	Kurt Ramien		Kouang-si (d.)	6,472		fr
21 Sep 1917	UC 53	Kurt Albrecht		Christina	32		it
22 Sep 1917	U 32	Kurt Hartwig		Caroline	107		fr
22 Sep 1917	U 60	Karl Georg Schuster		Mascotte	199		fr
22 Sep 1917	UB 40	Hans Howaldt		Greleen	2,286		br
22 Sep 1917	UB 50	Franz Becker		Alkyon	2,464		gr
22 Sep 1917	UB 50	Franz Becker		John Knudsen	1,670		nw
22 Sep 1917	UC 38	Hans Hermann Wendlandt		Garifaglia	430		gr
22 Sep 1917	UC 53	Kurt Albrecht		Primo	65		it
22 Sep 1917	UC 63	Karsten von Heydebreck		Italia	627		fr
22 Sep 1917	UC 64	Erich Hecht		Ville De Valenciennes	1,734		fr
22 Sep 1917	UC 71	Ernst Steindorff		Matti (d.)	2,139		nw
22 Sep 1917	UC 71	Ernst Steindorff		Trongate	2,553		br
23 Sep 1917				Ekaterini	unknown		gr
23 Sep 1917	U 60	Karl Georg Schuster		Gloire	51		fr
23 Sep 1917	U 60	Karl Georg Schuster		Henry Lippitt	595		am
23 Sep 1917	U 60	Karl Georg Schuster		Jeune Mathilde	58		fr
23 Sep 1917	UB 40	Hans Howaldt		Rosehill	2,788		br
23 Sep 1917	UC 21	Werner von Zerboni di Sposetti		St. Dunstan	730		br
23 Sep 1917	UC 23	Volkhard von Bothmer		Nicolaos	104		gr
23 Sep 1917	UC 27	Gerhard Schulz		Joaquina	69		sp
23 Sep 1917	UC 27	Gerhard Schulz		Medie	4,770		fr
23 Sep 1917	UC 38	Hans Hermann Wendlandt		Agios Nicolaos	119		gr
23 Sep 1917	UC 47	Paul Hundius		Perseverance	118		br
23 Sep 1917	UC 53	Kurt Albrecht		Argietta	165		it
23 Sep 1917	UC 53	Kurt Albrecht		Giuseppina Concettina	31		it
23 Sep 1917	UC 53	Kurt Albrecht		Irthington	2,845		br
23 Sep 1917	UC 71	Ernst Steindorff		Hornsund	3,646		br
24 Sep 1917	U 32	Kurt Hartwig		Iriston	3,221		br
24 Sep 1917	U 54	Kurt Heeseler		Louis Bossert	605		nw
24 Sep 1917	U 94	Alfred Saalwächter		Petersham (d.)	3,381		br
24 Sep 1917	UC 11	Karl Dobberstein		Hastfen	77		br
24 Sep 1917	UC 47	Paul Hundius		Mimosa (d.)	296		fr
24 Sep 1917	UC 53	Kurt Albrecht		Nuova Francesca	45		it
24 Sep 1917	UC 53	Kurt Albrecht		S. Espedito	31		it
24 Sep 1917	UC 63	Karsten von Heydebreck		Europe	2,839		fr
24 Sep 1917	UC 63	Karsten von Heydebreck		Perseverance	2,873		fr
24 Sep 1917	UC 71	Ernst Steindorff		Leka	1,845		nw
25 Sep 1917	U 54	Kurt Heeseler		Marceau	292		fr
25 Sep 1917	U 60	Karl Georg Schuster		Edouard Detaille	2,185		fr
25 Sep 1917	U 90	Walter Remy		Union Republicaine	44		fr
25 Sep 1917	UB 40	Hans Howaldt		City Of Swansea	1,375		br
25 Sep 1917	UC 47	Paul Hundius		Boynton	2,578		br
25 Sep 1917	UC 63	Karsten von Heydebreck		Dinorah	4,208		fr
25 Sep 1917	UC 63	Karsten von Heydebreck		James Seckar	255		br
25 Sep 1917	UC 65	Claus Lafrenz		Paolina	1,337		am
26 Sep 1917	U 101	Karl Koopmann		Jacqueline	2,899		fr
26 Sep 1917	U 63	Heinrich Metzger		Heraklios	2,878		gr
26 Sep 1917	UB 30	Wilhelm Rhein		S. N. A. 3	1,709		fr
26 Sep 1917	UB 50	Franz Becker		Ciro	296		it
26 Sep 1917	UC 33	Alfred Arnold		San Zeferino (d.)	6,430		br
26 Sep 1917	UC 50	Rudolf Seuffer		Ocean Star	92		br
26 Sep 1917	UC 69	Hugo Thielmann		Acorn	112		br
26 Sep 1917	UC 69	Hugo Thielmann		Port Victor (d.)	7,280		br
27 Sep 1917				Advent	895		br
27 Sep 1917	U 39	Walter Forstmann		Swan River	4,724		br
27 Sep 1917	U 90	Walter Remy		Deux Jeannes	50		fr
27 Sep 1917	U 90	Walter Remy		Liberte	49		fr
27 Sep 1917	U 90	Walter Remy		Peuples Freres	41		fr
27 Sep 1917	UB 34	Hellmuth von Ruckteschell		Greltoria	5,143		br
27 Sep 1917	UB 35	Karl Stöter		Colbert (d.)	385		fr
28 Sep 1917	UC 75	Johannes Lohs		William Middleton (d.)	2,543		br
29 Sep 1917	U 32	Kurt Hartwig		Sanwen	3,689		br
29 Sep 1917	U 60	Karl Georg Schuster		Bon Premier	1,352		fr
29 Sep 1917	U 60	Karl Georg Schuster		Eugenie Fautrel	2,212		fr
29 Sep 1917	U 60	Karl Georg Schuster		Percy B.	330		br
29 Sep 1917	U 61	Victor Dieckmann		Elmsgarth	3,503		br
29 Sep 1917	U 73	Ernst von Voigt		R 235	15		fr
29 Sep 1917	UB 34	Hellmuth von Ruckteschell		Bertha (p.)	185		nl
29 Sep 1917	UB 35	Karl Stöter		Kildonan	2,118		br
30 Sep 1917				Bezets	267		ru
30 Sep 1917	U 73	Ernst von Voigt		Midlothian	1,321		br
30 Sep 1917	U 73	Ernst von Voigt		Nicolosa	50		gr
30 Sep 1917	U 90	Walter Remy		Drake	2,267		br
30 Sep 1917	U 90	Walter Remy		Heron	885		br
30 Sep 1917	UB 51	Ernst Krafft		Amiral Troude	1,876		fr
30 Sep 1917	UC 74	Wilhelm Marschall		Charlsin	241		br
					459,307
218 ships sunk (351,327 tons) and 27 ships damaged (107,980 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.

This map shows where Allied ships were hit during September 1917.

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