# SM U-35 (Germany)

SM U-35 was a German U 31-class U-boat which operated in the Mediterranean Sea during World War I. It ended up being the most successful U-boat participating in the war, sinking 220 merchant ships for a total of 505,121 gross register tons (GRT).
Her longest-serving captain was Lothar von Arnauld de la Perière. Under his command, U-35 sank 191 ships, making him the most successful submarine commander in history.

## Design

Type U 31 submarines were double-hulled ocean-going submarines similar to Type 23 and Type 27 subs in dimensions and differed only slightly in propulsion and speed. They were considered very good high seas boats with average manoeuvrability and good surface steering.
U-35 had an overall length of 64.70 m (212 ft 3 in), her pressure hull was 52.36 m (171 ft 9 in) long. The boat's beam was 6.32 m (20 ft 9 in) (o/a), while the pressure hull measured 4.05 m (13 ft 3 in). Type 31s had a draught of 3.56 m (11 ft 8 in) with a total height of 7.68–8.04 m (25 ft 2 in – 26 ft 5 in). The boats displaced a total of 971 tonnes (956 long tons); 685 t (674 long tons) when surfaced and 878 t (864 long tons) when submerged.
U-35 was fitted with two Germania 6-cylinder two-stroke diesel engines with a total of 1,850 metric horsepower (1,361 kW; 1,825 bhp) for use on the surface and two Siemens-Schuckert double-acting electric motors with a total of 1,200 PS (883 kW; 1,184 shp) for underwater use. These engines powered two shafts each with a 1.60 m (5 ft 3 in) propeller, which gave the boat a top surface speed of 16.4 knots (30.4 km/h; 18.9 mph), and 9.7 knots (18.0 km/h; 11.2 mph) when submerged. Cruising range was 8,790 nautical miles (16,280 km; 10,120 mi) at 8 knots (15 km/h; 9.2 mph) on the surface, and 80 nmi (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph) under water. Diving depth was 50 m (164 ft 1 in).
The U-boat was armed with four 50 cm (20 in) torpedo tubes, two fitted in the bow and two in the stern, with carried 6 torpedoes. In 1915 U-35 was equipped with a 8.8 cm (3.5 in) Uk L/30 deck gun, which was replaced with a 10.5 cm (4.1 in) gun in 1916–17. The boat's complement was 4 officers and 31 enlisted men.

## Service history

U-35's keel was laid on 20 December 1912 at the Friedrich Krupp Germaniawerft shipyard in Kiel. Its delivery date was supposed to be 1 March 1914, but it was delayed due to development problems with its diesel engines. U-35 officially entered service on 3 November 1914, under the command of Kapitänleutnant Waldemar Kophamel. The lead engineer was Hans Fechter. It sailed with the II Flottille, stationed in Heligoland.
U-35 completed its first two deployments in reconnaissance actions in the North Sea. In its following three actions, U-35 sunk 17 merchant ships, for a total of 25,716 GRT. Later, it was paired with U-34 after a battle near Cattaro, Montenegro, and sunk two merchant ships for a total of 3,724 GRT. U-35 made two more voyages and destroyed 13 more merchant ships totaling 51,594 GRT. These included on 23 October 1915 the British transport Marquette in the Aegean Sea. She was carrying an Ammunition Column of the 29th Division; and also staff of the 1st New Zealand Stationary Hospital, despite a British hospital ship Grantully Castle sailing on the same route on the same day.
On 9 November 1915, with the help of sister U-34, U-35 sank the SS Californian, a cargo ship best known for its inaction during the sinking of the RMS Titanic on 15 April 1912, despite being the closest ship in the area. U-35 delivered a coup-de-grace after U-34 had attacked Californian earlier. She was under tow from a French patrol boat when U-35 moved in to finish her off. Coincidentally, U-35 would also come within close proximity of the ill-fated Titanic's sister ship RMS Olympic on an unknown date in 1916, but "conditions made attack impossible."
On 13 November 1915, Kptlt. de la Perière took command of U-35. He led 15 missions, primarily in the Mediterranean, and sank 187 merchant ships for a total of 417,682 GRT. Additionally, U-35 sank the British gunboat HMS Primula on 29 February 1916 and the French gunboat Rigel on 2 October 1916.
On 26 February 1916, she successfully torpedoed and sank the Armed merchant cruiser La Provence, carrying 1,800 French troops, near Cerigo Island with a loss of 990 men.
U-35's fourteenth patrol (26 July to 20 August 1916) under de la Perière stands as the most successful submarine patrol of all time. During that period, 54 merchant ships totaling 90,352 GRT were sunk.
She also sank on 4 October 1916, the French transport ship SS Gallia, leading to the death of between 600 and 1,800 men.
Kptlt. Ernst von Voigt took command of U-35 on 17 March 1918. He undertook two patrols, an enemy engagement and a redeployment cruise, between 7 September and 9 October 1918, but both were promptly broken off because of engine damage. On 14 October 1918, Kptlt. Heino von Heimburg took command and U-35 was transferred to Kiel.

## Fate

After World War I ended, U-35 was transferred to England and docked in Blyth from 1919 to 1920, then broken up.

## Summary of raiding history

Ships sunk or damaged by SM U-35 :
| Date | Name | Nationality | Tonnage | Fate |
| 9 March 1915 | Blackwood | United Kingdom | 1,230 | Sunk |
| 9 March 1915 | Gris Nez | France | 208 | Sunk |
| 15 March 1915 | Hyndford | United Kingdom | 4,286 | Damaged |
| 30 April 1915 | Laila | Norway | 748 | Sunk |
| 2 June 1915 | Cubano | Norway | 4,352 | Sunk |
| 4 June 1915 | George & Mary | United Kingdom | 100 | Sunk |
| 6 June 1915 | Sunlight | United Kingdom | 1,433 | Sunk |
| 7 June 1915 | Trudvang | Norway | 1,041 | Sunk |
| 8 June 1915 | Express | United Kingdom | 115 | Sunk |
| 8 June 1915 | La Liberte | France | 302 | Sunk |
| 8 June 1915 | Strathcarron | United Kingdom | 4,347 | Sunk |
| 8 June 1915 | Susannah | United Kingdom | 115 | Sunk |
| 10 June 1915 | Thomasina | Russian Empire | 1,869 | Sunk |
| 12 June 1915 | Bellglade | Norway | 664 | Sunk |
| 12 June 1915 | Crown of India | United Kingdom | 2,034 | Sunk |
| 13 June 1915 | Diamant | France | 324 | Sunk |
| 13 June 1915 | Hopemount | United Kingdom | 3,300 | Sunk |
| 13 June 1915 | Pelham | United Kingdom | 3,534 | Sunk |
| 10 August 1915 | Baltzer | Russian Empire | 343 | Damaged |
| 10 August 1915 | Francois | France | 2,212 | Sunk |
| 10 August 1915 | Morna | Norway | 1,512 | Sunk |
| 17 September 1915 | Ravitailleur | France | 2,815 | Sunk |
| 19 September 1915 | Ramazan | United Kingdom | 3,477 | Sunk |
| 20 September 1915 | Linkmoor | United Kingdom | 4,306 | Sunk |
| 18 October 1915 | Scilla | Kingdom of Italy | 1,220 | Sunk |
| 23 October 1915 | Marquette | United Kingdom | 7,057 | Sunk |
| 3 November 1915 | Woolwich | United Kingdom | 2,936 | Sunk |
| 5 November 1915 | HMS Tara | Royal Navy | 1,862 | Sunk |
| 5 November 1915 | Abbas | Egyptian Coast Guard | 298 | Sunk |
| 5 November 1915 | Nour-el-bahr | Egyptian Coast Guard | 450 | Damaged |
| 6 November 1915 | Caria | United Kingdom | 3,032 | Sunk |
| 6 November 1915 | Clan Macalister | United Kingdom | 4,835 | Sunk |
| 6 November 1915 | Lumina | United Kingdom | 6,218 | Sunk |
| 7 November 1915 | Moorina | United Kingdom | 4,994 | Sunk |
| 8 November 1915 | Den of Crombie | United Kingdom | 4,949 | Sunk |
| 8 November 1915 | Sir Richard Awdry | United Kingdom | 2,234 | Sunk |
| 8 November 1915 | Wacousta | Norway | 3,521 | Sunk |
| 9 November 1915 | Californian | United Kingdom | 6,223 | Sunk |
| 17 January 1916 | Sutherland | United Kingdom | 3,542 | Sunk |
| 18 January 1916 | Marere | United Kingdom | 6,443 | Sunk |
| 20 January 1916 | Trematon | United Kingdom | 4,198 | Sunk |
| 26 February 1916 | La Provence | French Navy | 13,753 | Sunk |
| 27 February 1916 | Giava | Kingdom of Italy | 2,755 | Sunk |
| 28 February 1916 | Masunda | United Kingdom | 4,952 | Sunk |
| 29 February 1916 | HMS Primula | Royal Navy | 1,250 | Sunk |
| 23 March 1916 | Minneapolis | United Kingdom | 13,543 | Sunk |
| 13 June 1916 | Maria C. | Kingdom of Italy | 77 | Sunk |
| 13 June 1916 | Motia | Kingdom of Italy | 500 | Sunk |
| 13 June 1916 | San Francesco Di Paola | Kingdom of Italy | 43 | Sunk |
| 14 June 1916 | Antonia V | Kingdom of Italy | 132 | Sunk |
| 14 June 1916 | Giosue | Kingdom of Italy | 20 | Sunk |
| 14 June 1916 | S. Francesco | Kingdom of Italy | 28 | Sunk |
| 14 June 1916 | Tavolara | Kingdom of Italy | 701 | Sunk |
| 15 June 1916 | Adelina | Kingdom of Italy | 170 | Sunk |
| 15 June 1916 | Annette | Kingdom of Italy | 112 | Sunk |
| 15 June 1916 | Audace | Kingdom of Italy | 144 | Sunk |
| 15 June 1916 | S. Maria | Kingdom of Italy | 515 | Sunk |
| 15 June 1916 | Sardinia | United Kingdom | 1,119 | Sunk |
| 16 June 1916 | Dolmetta M | Kingdom of Italy | 48 | Sunk |
| 16 June 1916 | Era | Kingdom of Italy | 1,078 | Sunk |
| 16 June 1916 | Eufrasia | Kingdom of Italy | 71 | Sunk |
| 16 June 1916 | Gafsa | United Kingdom | 3,922 | Sunk |
| 16 June 1916 | Rondine | Kingdom of Italy | 112 | Sunk |
| 17 June 1916 | Poviga | Kingdom of Italy | 3,360 | Sunk |
| 18 June 1916 | Aquila | Norway | 2,191 | Sunk |
| 18 June 1916 | Beachy | United Kingdom | 4,718 | Sunk |
| 18 June 1916 | Olga | France | 2,964 | Sunk |
| 18 June 1916 | Rona | United Kingdom | 1,312 | Sunk |
| 19 June 1916 | France Et Russie | France | 329 | Sunk |
| 19 June 1916 | Mario C. | Kingdom of Italy | 398 | Sunk |
| 23 June 1916 | Giuseppina | Kingdom of Italy | 1,872 | Sunk |
| 23 June 1916 | Herault | France | 2,299 | Sunk |
| 24 June 1916 | Canford Chine | United Kingdom | 2,398 | Sunk |
| 24 June 1916 | Checchina | France | 184 | Sunk |
| 24 June 1916 | Daiyetsu Maru | Japan | 3,184 | Sunk |
| 24 June 1916 | San Francesco | Kingdom of Italy | 1,060 | Sunk |
| 24 June 1916 | Saturnina Fanny | Kingdom of Italy | 1,568 | Sunk |
| 25 June 1916 | Clara | Kingdom of Italy | 5,503 | Sunk |
| 25 June 1916 | Fournel | France | 2,047 | Sunk |
| 27 June 1916 | Mongibello | Kingdom of Italy | 4,059 | Sunk |
| 27 June 1916 | Pino | Kingdom of Italy | 1,677 | Sunk |
| 27 June 1916 | Roma | Kingdom of Italy | 2,491 | Sunk |
| 27 June 1916 | Windermere | United Kingdom | 2,292 | Sunk |
| 29 June 1916 | Carlo Alberto | Kingdom of Italy | 312 | Sunk |
| 29 June 1916 | Giuseppina | Kingdom of Italy | 214 | Sunk |
| 29 June 1916 | Teano | United Kingdom | 1,907 | Sunk |
| 28 July 1916 | Dandolo | Kingdom of Italy | 4,977 | Sunk |
| 30 July 1916 | Britannic | United Kingdom | 3,487 | Sunk |
| 30 July 1916 | Ethelbryhta | United Kingdom | 3,084 | Sunk |
| 30 July 1916 | Giuseppe Marta | Tunisia | 111 | Sunk |
| 30 July 1916 | Katholm | Denmark | 1,324 | Sunk |
| 31 July 1916 | Citta Di Messina | Kingdom of Italy | 2,464 | Sunk |
| 31 July 1916 | Einar | Norway | 135 | Sunk |
| 31 July 1916 | Emilio G. | Kingdom of Italy | 166 | Sunk |
| 31 July 1916 | Erling | Norway | 122 | Sunk |
| 31 July 1916 | Generale Ameglio | Kingdom of Italy | 222 | Sunk |
| 1 August 1916 | Heighington | United Kingdom | 2,800 | Sunk |
| 2 August 1916 | Eugenia | Kingdom of Italy | 550 | Sunk |
| 2 August 1916 | Neptune | France | 151 | Sunk |
| 3 August 1916 | Tricoupis | Greece | 2,387 | Sunk |
| 4 August 1916 | Favonian | United Kingdom | 3,049 | Sunk |
| 4 August 1916 | Siena | Kingdom of Italy | 4,372 | Sunk |
| 4 August 1916 | Teti | Kingdom of Italy | 2,868 | Sunk |
| 4 August 1916 | Tottenham | United Kingdom | 3,106 | Sunk |
| 5 August 1916 | Achilleus | Greece | 843 | Sunk |
| 5 August 1916 | Mount Coniston | United Kingdom | 3,018 | Sunk |
| 7 August 1916 | Newburn | United Kingdom | 3,554 | Sunk |
| 7 August 1916 | Trident | United Kingdom | 3,129 | Sunk |
| 8 August 1916 | Imperial | United Kingdom | 3,818 | Sunk |
| 8 August 1916 | Speme | Kingdom of Italy | 1,229 | Sunk |
| 9 August 1916 | Antiope | United Kingdom | 2,973 | Sunk |
| 9 August 1916 | Ganekogorta Mendi | Spain | 3,061 | Sunk |
| 9 August 1916 | Sebastiano | Kingdom of Italy | 3,995 | Sunk |
| 10 August 1916 | Temmei Maru | Japan | 3,360 | Sunk |
| 11 August 1916 | Pagasarri | Spain | 3,287 | Sunk |
| 12 August 1916 | Gina | Kingdom of Italy | 443 | Sunk |
| 12 August 1916 | Nereus | Kingdom of Italy | 3,980 | Sunk |
| 12 August 1916 | Regina Pacis | Kingdom of Italy | 2,228 | Sunk |
| 12 August 1916 | Saint Gaetan (aux) | France | 125 | Sunk |
| 13 August 1916 | Balmoral | Kingdom of Italy | 2,542 | Sunk |
| 13 August 1916 | Eurasia | Kingdom of Italy | 1,898 | Sunk |
| 13 August 1916 | Francesco Saverio | Kingdom of Italy | 214 | Sunk |
| 13 August 1916 | Ivar | Denmark | 2,139 | Sunk |
| 14 August 1916 | Emilia | Kingdom of Italy | 319 | Sunk |
| 14 August 1916 | Francesca | Kingdom of Italy | 161 | Sunk |
| 14 August 1916 | Henriette B. | Kingdom of Italy | 176 | Sunk |
| 14 August 1916 | Ida | Kingdom of Italy | 242 | Sunk |
| 14 August 1916 | Lavinia | Kingdom of Italy | 243 | Sunk |
| 14 August 1916 | Louis B. | Kingdom of Italy | 212 | Sunk |
| 14 August 1916 | Pausania | Kingdom of Italy | 107 | Sunk |
| 14 August 1916 | Rosario | Kingdom of Italy | 188 | Sunk |
| 14 August 1916 | S. Francesco Di Paola S. | Kingdom of Italy | 113 | Sunk |
| 14 August 1916 | San Giovanni Battista | Kingdom of Italy | 1,066 | Sunk |
| 14 August 1916 | S. Giuseppe Patriarca | Kingdom of Italy | 63 | Sunk |
| 15 August 1916 | Augusta | Kingdom of Italy | 523 | Sunk |
| 15 August 1916 | Candida Altieri | Kingdom of Italy | 282 | Sunk |
| 15 August 1916 | Vergine Di Pompei | Kingdom of Italy | 146 | Sunk |
| 16 August 1916 | Madre | Kingdom of Italy | 665 | Sunk |
| 17 August 1916 | Swedish Prince | United Kingdom | 3,712 | Sunk |
| 18 August 1916 | Erix | Kingdom of Italy | 923 | Sunk |
| 19 September 1916 | Doride | Kingdom of Italy | 1,250 | Sunk |
| 19 September 1916 | Teresa | Kingdom of Italy | 270 | Sunk |
| 22 September 1916 | Garibaldi | Kingdom of Italy | 1,374 | Sunk |
| 22 September 1916 | Giovanni Zambelli | Kingdom of Italy | 2,485 | Sunk |
| 23 September 1916 | Charterhouse | United Kingdom | 3,021 | Sunk |
| 24 September 1916 | Bronwen | United Kingdom | 4,250 | Sunk |
| 24 September 1916 | Bufjord | Norway | 2,284 | Sunk |
| 24 September 1916 | Nicolo | Kingdom of Italy | 5,466 | Sunk |
| 25 September 1916 | Benpark | Kingdom of Italy | 3,842 | Sunk |
| 26 September 1916 | Newby | United Kingdom | 2,168 | Sunk |
| 26 September 1916 | Roddam | United Kingdom | 3,218 | Sunk |
| 26 September 1916 | Stathe | United Kingdom | 2,623 | Sunk |
| 27 September 1916 | Rallas | United Kingdom | 1,752 | Sunk |
| 27 September 1916 | Secondo | United Kingdom | 3,912 | Sunk |
| 27 September 1916 | Vindeggen | Norway | 2,610 | Sunk |
| 29 September 1916 | Venus | Kingdom of Italy | 3,976 | Sunk |
| 2 October 1916 | Rigel | French Navy | 1,250 | Sunk |
| 3 October 1916 | Samos | Greece | 1,186 | Sunk |
| 4 October 1916 | Birk | Norway | 715 | Sunk |
| 4 October 1916 | Gallia | French Navy | 14,966 | Sunk |
| 5 October 1916 | Aurora | Kingdom of Italy | 2,806 | Sunk |
| 5 October 1916 | Vera | Sweden | 2,308 | Sunk |
| 5 January 1917 | Lesbian | United Kingdom | 2,555 | Sunk |
| 5 January 1917 | Salvatore Padre | Kingdom of Italy | 200 | Sunk |
| 6 January 1917 | Hudworth | United Kingdom | 3,966 | Sunk |
| 7 January 1917 | Mohacsfield | United Kingdom | 3,678 | Sunk |
| 8 January 1917 | Andoni | United Kingdom | 3,188 | Sunk |
| 8 January 1917 | Lynfield | United Kingdom | 3,023 | Sunk |
| 11 February 1917 | Assunta | Kingdom of Italy | 132 | Sunk |
| 12 February 1917 | Lyman M. Law | United States | 1,300 | Sunk |
| 13 February 1917 | Percy Roy | United Kingdom | 110 | Sunk |
| 14 February 1917 | Mery | Russian Empire | 178 | Sunk |
| 14 February 1917 | Oceania | Kingdom of Italy | 4,217 | Sunk |
| 15 February 1917 | Buranda | United Kingdom | 3,651 | Damaged |
| 16 February 1917 | Oriana | Kingdom of Italy | 3,132 | Sunk |
| 16 February 1917 | Prudenza | Kingdom of Italy | 3,307 | Sunk |
| 17 February 1917 | Pierre Hubert | Kingdom of Italy | 112 | Sunk |
| 18 February 1917 | Giuseppe | Kingdom of Italy | 1,856 | Sunk |
| 18 February 1917 | Guido T | Kingdom of Italy | 324 | Sunk |
| 18 February 1917 | Skogland | Sweden | 3,264 | Sunk |
| 23 February 1917 | Longhirst | United Kingdom | 3,053 | Sunk |
| 23 February 1917 | Mont Viso | France | 4,820 | Damaged |
| 24 February 1917 | Dorothy | United Kingdom | 3,806 | Sunk |
| 24 February 1917 | Prikonisos | Greece | 3,537 | Sunk |
| 3 April 1917 | Ardgask | United Kingdom | 4,542 | Sunk |
| 4 April 1917 | Marguerite | United States | 1,553 | Sunk |
| 4 April 1917 | Parkgate | United Kingdom | 3,232 | Sunk |
| 7 April 1917 | Maplewood | United Kingdom | 3,239 | Sunk |
| 11 April 1917 | Miss Morris | United Kingdom | 156 | Sunk |
| 12 April 1917 | India | Greece | 2,933 | Sunk |
| 13 April 1917 | Giuseppe Accame | Kingdom of Italy | 3,224 | Sunk |
| 13 April 1917 | Odysseus | Greece | 3,463 | Sunk |
| 13 April 1917 | Stromboli | Kingdom of Italy | 5,466 | Sunk |
| 14 April 1917 | Patagonier | United Kingdom | 3,832 | Sunk |
| 15 April 1917 | Panaghi Drakatos | Greece | 2,734 | Sunk |
| 17 April 1917 | Brisbane River | United Kingdom | 4,989 | Sunk |
| 17 April 1917 | Corfu | United Kingdom | 3,695 | Sunk |
| 17 April 1917 | Fernmoor | United Kingdom | 3,098 | Sunk |
| 18 April 1917 | Trekieve | United Kingdom | 3,087 | Sunk |
| 19 April 1917 | Sowwell | United Kingdom | 3,781 | Sunk |
| 20 April 1917 | Leasowe Castle | United Kingdom | 9,737 | Damaged |
| 20 April 1917 | Lowdale | United Kingdom | 2,260 | Sunk |
| 20 April 1917 | Nentmoor | United Kingdom | 3,535 | Sunk |
| 23 April 1917 | Bandiera E Moro | Kingdom of Italy | 2,086 | Sunk |
| 24 April 1917 | Bien Aime Prof. Luigi | Kingdom of Italy | 265 | Sunk |
| 24 April 1917 | Nordsøen | Denmark | 1,055 | Sunk |
| 24 April 1917 | Torvore | Norway | 1,667 | Sunk |
| 24 April 1917 | Vilhelm Krag | Norway | 3,715 | Sunk |
| 27 April 1917 | Triana | Spain | 748 | Damaged |
| 13 October 1917 | Alavi | United Kingdom | 3,627 | Sunk |
| 13 October 1917 | Despina G. Michalinos | Greece | 2,851 | Sunk |
| 13 October 1917 | Doris | Kingdom of Italy | 3,979 | Sunk |
| 13 October 1917 | Lilla | Kingdom of Italy | 2,819 | Sunk |
| 15 October 1917 | HMS City Of Belfast | Royal Navy | 1,055 | Damaged |
| 18 October 1917 | Lorenzo | Kingdom of Italy | 2,498 | Sunk |
| 19 October 1917 | Ikoma Maru | Japan | 3,048 | Sunk |
| 25 October 1917 | Fannie Prescott | United States | 404 | Sunk |
| 29 October 1917 | Namur | United Kingdom | 6,694 | Sunk |
| 31 October 1917 | Cambric | United Kingdom | 3,403 | Sunk |
| 2 November 1917 | Maria Di Porto Salvo | Kingdom of Italy | 91 | Sunk |
| 2 November 1917 | San Francesco Di Paola G. | Kingdom of Italy | 91 | Sunk |
| 11 December 1917 | Persier | United Kingdom | 3,874 | Sunk |
| 20 December 1917 | Fiscus | United Kingdom | 4,782 | Sunk |
| 20 December 1917 | Waverley | United Kingdom | 3,853 | Sunk |
| 23 December 1917 | Pietro | Kingdom of Italy | 3,860 | Sunk |
| 24 December 1917 | Turnbridge | United Kingdom | 2,874 | Sunk |
| 25 December 1917 | Argo | United Kingdom | 3,071 | Sunk |
| 25 December 1917 | Cliftondale | United Kingdom | 3,811 | Sunk |
| 25 December 1917 | Nordpol | Norway | 2,053 | Sunk |
| 23 February 1918 | Humberto | Portugal | 274 | Sunk |
| 26 February 1918 | Pytheas | Norway | 2,690 | Sunk |
| 27 February 1918 | Kerman | United Kingdom | 4,397 | Damaged |
| 27 February 1918 | Marconi | United Kingdom | 7,402 | Damaged |
| 6 March 1918 | Daiten Maru | Japan | 4,555 | Sunk |
| 7 March 1918 | Begona No.4 | Spain | 1,850 | Sunk |
| 9 March 1918 | Silverdale | United Kingdom | 3,835 | Sunk |
| | | Sunk: Damaged: Total: | 538,500 36,889 575,389 | |