yes

* surfaced
* submerged

* at surfaced
* at submerged

*2 ships sunk
*1 warship sunk

*5 × torpedo tubes
*10 torpedoes
*1 × deck gun

SM UB-57

UB-14

Blohm & Voss, Hamburg

SM UB-132 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 25 July 1918 as SM UB-132.UB-132 was surrendered on 21 November 1918 in accordance with the requirements of the Armistice with Germany.

Surrendered to the US, sunk as target.

* o/a
* pressure hull

UB-148

*2 × bow torpedo tubes
*4 torpedoes
*1 × deck gun

SM UB-35 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 28 December 1915. She was commissioned into the German Imperial Navy on 22 June 1916 as SM UB-35.The submarine sank 43 ships in 26 patrols. UB-35 was depth charged and sunk by British warships including HMS Leven in the English Channel on 26 January 1918.

SM UB-55 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 1 July 1917 as SM UB-55.She operated as part of the Flanders Flotilla based in Zeebrugge. UB-55 was sunk at 05:05 on 22 April 1918 at 51°01′N 01°20′E after striking a mine, 30 crew members lost their lives in the event.

UB-3

broken up at Malta, 1920

SM UB-14 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The submarine was also known by the Austro-Hungarian Navy designation of SM U-26.UB-14 was ordered in October 1914 and was laid down at the AG Weser shipyard in Bremen in November. UB-14 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged.

SM UB-132

SM UB-142 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 31 August 1918 as SM UB-142.She was surrendered to France on 22 November 1918 in accordance with the requirements of the Armistice with Germany and broken up at Landerneau in July 1921.

sunk 29 November 1917 by mine at, 34 dead

SM UB-148 was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 19 September 1918 as UB-148 . UB-148 was surrendered to the United States in accordance with the requirements of the Armistice with Germany on 1 December 1918 and later sunk as target by USS Sicard.

*2 × torpedo tubes
*4 × torpedoes
*1 × 5 cm SK L/40 gun

SM UB-47 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-47 was sold to the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during the war. In Austro-Hungarian service the B was dropped from her name and she was known as SM U-47 or U-XLVII as a member of the Austro-Hungarian U-43 class.UB-47 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-47 was a little more than 121 feet (37 m) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 8.8-centimeter (3.5 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-47 was broken into railcar sized components and shipped to Pola where she was assembled and launched in June 1916, and commissioned in July. Over the next year the U-boat sank twenty ships, which included the French battleship Gaulois and two Cunard Line steamers in use as troopships, Franconia and Ivernia.The German Imperial Navy was having difficulties in finding trained submarine crews and offered to sell UB-47 and a sister boat UB-43 to the Austro-Hungarian Navy. After the terms were agreed to in June 1917, both boats were handed over at Pola. When commissioned into the Austro-Hungarian Navy, the B in her designation was dropped so that she became U-47 or U-XLVII. She sank an additional three ships in Austro-Hungarian service through the end of the war. U-47 was ceded to France as a war reparation in 1920 and broken at Bizerta that same year.

*20 merchant ships sunk
*3 merchant ships damaged
*2 warships sunk

*1 × propeller shaft
*2 × 6-cylinder diesel engine,
*2 × electric motor,

Austria-Hungary

UB-32 redirects here. For the Soviet rocket launcher, see S-5 rocketSM UB-32 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 4 December 1915. She was commissioned into the German Imperial Navy on 11 April 1916 as SM UB-32.The submarine sank 22 ships in 16 patrols.

SM U-43

*2 × propeller shaft
*2 × MAN four-stroke 6-cylinder diesel engines,
*2 × Siemens-Schuckert electric motors,

UB-36

SM UB-3 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She disappeared on her first patrol in May 1915, and was the first of her class to be lost.UB-3 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-3 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 metric tons (125 and 140 long tons), depending on whether surfaced or submerged.

UB-20

UB-53
SM UB-53 was a German Type UB III submarine or U-boat in the Imperial German Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Pola Flotilla of the German Imperial Navy on 21 August 1917 as SM UB-53.She operated as part of the Pola Flotilla based in Cattaro. UB-53 was sunk by mines of the Otranto Barrage on 3 August 1918 at 39°40′N 18°40′E in the Otranto Strait, 10 crew members died.

O 7

SM UB-58

None

SM UB-41 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I.

AG Weser, Bremen

*1 × propeller shaft
*2 ×four-stroke 6-cylinder diesel engine,
*2 × electric motor,

UB-27

at surfaced at

ceded to France aswar reparation, 1920; scrapped

UB-42

SM UB-44

*2 × bow torpedo tubes
*2 × torpedoes
*1 × machine gun

Service record as U-43

*2 × propeller shaft
*2 × Körting four-stroke 6-cylinder diesel engines,
*2 × Siemens-Schuckert electric motors,

*93 merchant ships sunk
*3 merchant ships damaged

SM UB-32

Ernest Martin Jehan

SM UB-149 was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 22 October 1918 as UB-149 . UB-149 was surrendered to Britain in accordance with the requirements of the Armistice with Germany on 22 November 1918 and broken up at Swansea in 1922.

Surrendered to Japan, served in Imperial Japanese Navy as O 7.

SM UB-53

UB-149

Service record

*19 merchant ships
*1 merchant ship damaged

UB-60

*5 × torpedo tubes
*10 × torpedoes
*1 × deck gun

*Kptlt. Martin Schelle
*

No patrols

scuttled during the retreat from Belgium

Roland Morillot

UB-133

SM UB-60 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Training Flotilla of the German Imperial Navy on 6 June 1917 as SM UB-60.She operated as part of the Training Flotilla based in Kiel. UB-60 was surrendered to the British on 26 November 1918 in accordance with the requirements of the Armistice with Germany, while en route to England it beached of the English East Coast and was broken up in 1921.

UB-24

*2 × propeller shaft
*2 × Benz four-stroke 6-cylinder diesel engines,
*2 × Schiffsunion electric motors,

SM UB-3 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She disappeared on her first patrol in May 1915, and was the first of her class to be lost.UB-3 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-3 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 metric tons (125 and 140 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. She was launched and commissioned as SM UB-3 in March 1915.UB-3 was broken into sections and shipped by rail to the Austro-Hungarian port of Pola in April for reassembly. She officially joined the Pola Flotilla on 1 May and departed on her first patrol for temporary duty in Turkey on 23 May, and was never seen again. A postwar German study concluded that UB-3 was likely the victim of an unexplained technical problem in the absence of any minefields or enemy action.

*22 merchant ships sunk
*4 merchant ships damaged

SM UB-143

UB-57

*German Imperial Navy:
*Pola Flotilla, May – August 1916

UB-29

Inverlyon, unknown number of crew

*8 merchant ships sunk
*1 merchant ship damaged

*2 × propeller shaft
*2 × MAN four-stroke 6-cylinder diesel engine,
*2 × Siemens-Schuckert electric motor,

SM UB-154' was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was never commissioned into the German Imperial Navy but surrendered to France on 9 March 1919 in accordance with the requirements of the Armistice with Germany and broken up at Brest in July 1921.

SM UB-22

*as built: German Type UB II submarine
*after July 1917: U-43-class submarine

UB-19

*German Imperial Navy
* Flanders Flotilla,

UB-5

sunk 1920

SM UB-20

Coastal submarine

title

UB-44

SM UB-43 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-43 was sold to the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during the war.

UB-4

*1 × propeller shaft
*1 × Körting 4-cylinder diesel engine,
*1 × Siemens-Schuckert electric motor,

UB-26

*1 × propeller shaft
*2 × four-stroke 6-cylinder diesel engine,
*2 × electric motor,

SM UB-59 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 25 August 1917 as SM UB-59.She operated as part of the Flanders Flotilla based in Zeebrugge. UB-59 scuttled 5 October 1918 off Zeebrugge at 51°19′N 03°12′E during the evacuation of Belgium by German forces.

SM UB-54 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 12 June 1917 as SM UB-54.The submarine conducted 6 patrols and sank 14 ships during the war for a total loss of 7,200 gross register tons (GRT).She operated as part of the Flanders Flotilla based in Zeebrugge. UB-54 was apparently sunk on 11 March 1918 at 53°15′N 0°45′E by British destroyers HMS Sturgeon, Thruster, and Retriever using depth charges, all hands were lost.

Sold to Austria-Hungary

*21 merchant ships sunk
*2 merchant ships damaged

UB-31

SM UB-14 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The submarine was also known by the Austro-Hungarian Navy designation of SM U-26.UB-14 was ordered in October 1914 and was laid down at the AG Weser shipyard in Bremen in November. UB-14 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-14 was broken into sections and shipped by rail to the Austrian port Pola for reassembly. She was launched and commissioned in March 1915 as SM UB-14 in the German Imperial Navy under the command of Oberleutnant zur See Heino von Heimburg.Because Germany and Italy were not yet at war when UB-14 entered service, she was transferred in name only to the Austro-Hungarian Navy. The submarine retained her German captain and crew, and remained under German command as a part of the Kaiserliche Marine's Pola Flotilla. During her first patrol in the Adriatic, UB-14 torpedoed and sank the Italian armored cruiser Amalfi. While traveling to Constantinople (present-day Istanbul) to join the Constantinople Flotilla, UB-14 attacked two British troopships, sinking Royal Edward with heavy loss of life, and seriously damaging Southland. All three of UB-14's first victims were among the largest ships attacked by U-boats during the war.Although UB-14 sank the British submarine E20 in the Sea of Marmara in November 1915, she spent most of the rest of her career patrolling in the Black Sea. The U-boat had only limited success there, sinking only three ships through the end of the war. After the war ended, the submarine was disarmed at Sevastopol and surrendered at Malta in November 1918. UB-14 was broken up in 1920.

Service record as UB-46

SM UB-60

*13 ships sunk
*2 damaged
*3 taken as prize

March 1915

UB-33

SM UB-31 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 16 November 1915. She was commissioned into the German Imperial Navy on 25 March 1916 as SM UB-31.The submarine sank 26 ships in 25 patrols. UB-31 was depth charged and sunk by British warships HMS Lord Leitrim, HMS Loyal Friend, and HMS Ocean Roamer in the English Channel on 2 May 1918.

*39 merchant ships sunk
*7 merchant ships damaged
*1 warship sunk

SM UB-155' was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was never commissioned into the German Imperial Navy but surrendered to France on 9 March 1919 in accordance with the requirements of the Armistice with Germany and broken up at Brest in July 1921.

SM UB-17

Surrendered to France, broken up in 1921.

* at surfaced
* at

SM UB-25 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 11 December 1915 as SM UB-25. The submarine was lost in a collision with SMS V26 in Kiel harbour on 17 March 1917. She was raised on 22 March 1917 by the salvage ship SMS Vulcan and served on as a training boat until she was surrendered to Britain in accordance with the requirements of the Armistice with Germany on 26 November 1918. UB-25 was finally broken up in Canning Town in 1922.

Surrendered, broken up in Rochester in 1922.

sunk 11 March 1918 atby British destroyers, 36 dead

sunk in Le Havre harbour

*German Imperial Navy
*Flanders Flotilla

UB-32 redirects here. For the Soviet rocket launcher, see S-5 rocketSM UB-32 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 4 December 1915. She was commissioned into the German Imperial Navy on 11 April 1916 as SM UB-32.The submarine sank 22 ships in 16 patrols. She was last heard from on 17 September 1917 and may have been bombed and sunk by Royal Naval Air Service aircraft in the English Channel on 22 September 1917.

UB-143

SM UB-58 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 10 August 1917 as SM UB-58.She operated as part of the Flanders Flotilla based in Zeebrugge. UB-58 was sunk at 04:15 on 10 March 1918 at 50°58′N 01°14′E after striking a mine, 35 crew members lost their lives in the event.

* at
* at

* 13 ships sunk
* 1 ship damaged
* 2 ships seized as prizes

*2 × propeller shaft
*2 × MAN-Vulcan four-stroke 6-cylinder diesel engines,
*2 × Siemens-Schuckert electric motors,

SM UB-145

Service record as UB-58

SM UB-19 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 2 September 1915. She was commissioned into the German Imperial Navy on 16 December 1915 as SM UB-19. The submarine sank 14 ships in 15 patrols for a totel of 11,558 gross register tons (GRT). UB-19 was sunk in the English Channel at 49°56′N 2°45′W on 30 November 1916 by British Q ship HMS Penshurst (Q 7).

*42 merchant ships sunk
*2 merchant ships damaged
*4 merchant ships captured as prizes

October 1918

SM UB-18 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 21 August 1915. She was commissioned into the German Imperial Navy on 11 December 1915 as SM UB-18. The submarine sank 126 ships in 31 patrols for a total of 129,782 gross register tons (GRT) making her the 13th most successful U-boat in both world wars. UB-18 was rammed by the trawler Ben Lawer and sunk in the English Channel at 49°17′N 5°47′W on 9 December 1917.

SM UB-25

* 10 ships sunk
* 1 ship taken as prize
* 1 warship damaged

* Fritz Wernicke
* Kurt Schwarz
* Erich von Rohrscheidt
* Herbert Nolde
* Hans Georg Lübbe
* Cassius von Montigny
* Peter Ernst Eiffe

SM UB-150 was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 27 March 1919 as UB-150 . UB-150 was surrendered to Britain in accordance with the requirements of the Armistice with Germany and broken up at Rochester in 1922.

*2 × torpedo tubes
*4 × torpedoes
*1 × deck gun

Shp decommissioned

SM UB-24 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 18 October 1915. She was commissioned into the German Imperial Navy on 18 November 1915 as SM UB-24. The submarine was surrendered to France in accordance with the requirements of the Armistice with Germany on 24 November 1918 and broken up in Cherbourg in July 1921.

Ship original costs

SM UB-26

*German Imperial Navy:
*Pola Flotilla, June – October 1916
*Constantinople Flotilla, October – December 1916

UB-150

*Imperial German Navy
* Flanders Flotilla
* Baltic Flotilla
* training flotilla

UB-22

SM UB-40 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I.

SM UB-14

surrendered to the British 21 November 1918 andbroken upin Fareham in 1921

SM UB-28

SM UB-39

SM UB-145 was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was never commissioned into the German Imperial Navy but surrendered to Britain on 27 March 1919 and broken up in Rochester in 1922.

SM UB-43 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-43 was sold to the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during the war. In Austro-Hungarian service the B was dropped from her name and she was known as SM U-43 or U-XLIII as the lead boat of the Austro-Hungarian U-43 class.UB-43 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-43 was a little more than 121 feet (37 m) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 8.8-centimeter (3.5 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-43 was broken into railcar sized components and shipped to Pola where she was assembled and launched in early April 1916, and commissioned later in the month. Over the next year the U-boat sank twenty-two ships, which included the Peninsular and Oriental liner Arabia. UB-43 also damaged the British cruiser Grafton.The German Imperial Navy was having difficulties filling submarine crews with trained men and offered to sell UB-43 and a sister boat, UB-47, to the Austro-Hungarian Navy. After the terms were agreed to in June 1917, both boats were handed over at Pola. When commissioned into the Austro-Hungarian Navy, the B in her designation was dropped so that she became U-43 or U-XLIII. She damaged one Italian steamer in limited Austro-Hungarian service through the end of the war. U-43 was ceded to France as a war reparation in 1920 and broken at Bizerta that same year.

UB-65

SM UB-133 was a German Type UB III submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. Completed after the end of hostilities, she was not commissioned into the German Imperial Navy but surrendered to Britain in accordance with the requirements of the Armistice with Germany. In 1922 she was broken up in Rochester.

UB-37

UB-51

UB-58

SM UB-33 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 5 December 1915. She was commissioned into the German Imperial Navy on 22 April 1916 as SM UB-33.The submarine sank thirteen ships, damaged two others, and took a further three as prizes in seventeen patrols.

SM UB-46

SM UB-15

*8 merchant ships sunk
*2 merchant ships damaged
*1 merchant ships captured as a prize

none

UB-46

SM UB-55

* 22 ships sunk
* 1 warships damaged

UB-142

SM UB-65

sunk 19 December 1917 atby a mine, 37 dead

SM UB-155

UB-4, 14 crewmembers

SM U-47

UB-56

Sunk May 1917

UB-132

UB-21

SM UB-22 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 2 March 1915 as SM UB-22. The submarine sank 29 ships in 18 patrols for a total of 20,224 gross register tons (GRT). UB-22 was mined and sunk in the same accident with the torpedoboat S 16 in the North Sea at 54°40′N 6°32′E on 19 January 1918 in a British minefield.

SM UB-37 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 28 December 1915. She was commissioned into the German Imperial Navy on 17 June 1916 as SM UB-37.The submarine sank 31 ships in ten patrols. UB-37 was sunk by British Q ship HMS Penshurst in the English Channel on 14 January 1917.The wreck of UB-37 was identified by marine archaeologist Innes McCartney in 1999.

Off the coast of Great Yarmouth, England

UB-64

UB-39

SM UB-40

SM UB-133

*31 merchant ships sunk
*3 merchant ships damaged
*1 merchant ship taken as a prize

SM UB-42

SM UB-142

UB-54

*26 merchant ships sunk
*8 merchant ships damaged

SM UB-56 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 19 July 1917 as SM UB-56.She operated as part of the Flanders Flotilla based in Zeebrugge. UB-56 was sunk at 23:41 on 19 December 1917 at 50°58′N 01°21′E after striking a mine, 37 crew members lost their lives in the event.

sunk 14 August 1918 atby a mine, 34 dead

SM UB-51 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Pola Flotilla of the German Imperial Navy on 26 July 1917 as SM UB-51.She operated as part of the Pola Flotilla based in Cattaro. UB-51 was surrendered 16 January 1919 with the remainder of the Pola Flotilla following orders by Admiral Reinhard Scheer to return to port. UB-51 was later broken up at Swansea.

SM UB-41

SM UB-28 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 20 December 1915. She was commissioned into the German Imperial Navy on 27 December 1915 as SM UB-28.UB-28 was surrendered to Britain in accordance with the requirements of the Armistice with Germany on 24 November 1918. She was ultimately broken up at Bo'ness in 1919-20.

UB-47

SM UB-18 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 21 August 1915. She was commissioned into the German Imperial Navy on 11 December 1915 as SM UB-18. The submarine sank 126 ships in 31 patrols for a total of 129,782 gross register tons (GRT) making her the 13th most successful U-boat in both world wars.

SM UB-62 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 9 July 1917 as SM UB-62.UB-62 was surrendered 21 November 1918 in accordance with the requirements of the Armistice with Germany and broken up in Swansea in 1921.

Service record as UB-43

surrendered 26 November 1918, beached off English East Coast, broken up 1921

SM UB-17 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The submarine disappeared during a patrol in March 1918.UB-17 was ordered in November 1914 and was laid down at the AG Weser shipyard in Bremen in February 1915. UB-17 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged.

Action of 15 August 1915

UB-145

SM UB-57 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 30 July 1917 as SM UB-57.She operated as part of the Flanders Flotilla based in Zeebrugge. UB-57 was sunk at 23:00 on 14 August 1918 at 51°56′N 02°02′E after striking a mine, 34 crew members lost their lives in the event.

UB-35

ceded to France as war reparation, 1920; scrapped

surfaced submerged

SM UB-26 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 14 December 1915. She was commissioned into the German Imperial Navy on 7 January 1916 as SM UB-26. UB-26 was trapped in anti-submarine nets trailed by the French destroyer Trombe and was scuttled in Le Havre harbour on 5 April 1916. She was raised by the French on 30 August 1917 and served as Roland Morillot.On 23 October 1922, Roland Morillot sprang a leak and was abandoned in the English Channel west of Guernsey, Channel Islands. Her crew were rescued by the French ship Daphne. Roland Morillot was subsequently towed into Cherbourg, France by the French tug Centaure.Roland Morillot was repaired and remained in service until 21 January 1925. She then was used in tests before finally being broken up in Cherbourg in 1935.

*99 merchant ships sunk
*15 merchant ship damaged
*1 merchant ship captured as a prize

UB-40

SM UB-20 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 26 September 1915. She was commissioned into the German Imperial Navy on 10 February 1916 as SM UB-20. The submarine sank 13 ships in 15 patrols for a total of 10,230 gross register tons (GRT). UB-20 was mined and sunk on 28 July 1917 at 51°25′N 3°20′W. Thirteen crew members died in the event.

UB-61

sunk by British warships 26 January 1918

UB-32

Franz Wäger

UB-55

*7 merchant ships sunk
*2 merchant ships damaged

Broken up in Yokohama in 1921.

SM UB-59

* Friedrich Schlosser
* Eugen Hornyák Edler von Horn

UB-155

UB-62

SM UB-43

Karl Gross

SM UB-64 (Germany)

SM UB-22 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 2 March 1915 as SM UB-22. The submarine sank 29 ships in 18 patrols for a total of 20,224 gross register tons (GRT).

UB-50

UB-17

*V Flotilla
*
*II Flotilla
*

UB-43

SM UB-50 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 20 May 1916. She was commissioned into the Pola Flotilla of the German Imperial Navy on 12 July 1917 as SM UB-50.The submarine conducted seven patrols and sank 38 ships during the war for a total loss of 97,284 gross register tons (GRT). She operated as part of the Pola Flotilla based in Cattaro.

* surfaced
*, submerged

SM UB-46 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-46 operated in the Mediterranean and the Black Seas, and was sunk by a mine in December 1916.UB-46 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-46 was a little more than 121 feet (37 m) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged.

Service record as UB-59

SM UB-61 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 23 June 1917 as SM UB-61.The submarine conducted three patrols and sank two ships during the war for a total loss of 12,920 gross register tons (GRT).UB-61 was struck by a mine on 29 November 1917 at 53°20′N 4°56′E and sunk with all hands lost.

Service record as U-47

*11 merchant ships sunk
*3 merchant ships damaged
*1 merchant ship captured as a prize

SM UB-50

Service record as UB-47

*1 × propeller shaft
*2 × 4-stroke 6-cylinder diesel engine,
*2 × electric motor,

SM UB-25 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 11 December 1915 as SM UB-25. The submarine was lost in a collision with SMS V26 in Kiel harbour on 17 March 1917.

SM UB-24

*29 merchant ships sunk
*4 merchant ships damaged
*1 merchant ship taken as prize

SM UB-27

UB-18

*126 merchant ships sunk
*4 merchant ships sunk
*2 warships sunk

SM UB-143 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 3 October 1918 as SM UB-143.She was surrendered to Japan on 1 December 1918 and served in the Imperial Japanese Navy until 1921, when she was broken up in Yokohama.

SM UB-64 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 5 August 1917 as SM UB-64.UB-64 was surrendered to the British on 21 November 1918 in accordance with the requirements of the Armistice with Germany and broken up in Fareham in 1921.

Service record as UB-42

SM UB-4

Cäsar Bauer

SM UB-54 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 12 June 1917 as SM UB-54.The submarine conducted 6 patrols and sank 14 ships during the war for a total loss of 7,200 gross register tons (GRT).She operated as part of the Flanders Flotilla based in Zeebrugge.

UB-41

SM UB-37

*47 merchant ships sunk
*10 merchant ships damaged

SM UB-42 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-42 operated in the Mediterranean and the Black Seas during the war. She was broken up at Malta in 1920.UB-42 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-42 was 36.90 m (121 ft 1 in) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged.

SM UB-56

SM UB-3

broken up, 1919

Seiner Majestät UB-4 was a German Type UB I submarine (U-boat) in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was sunk by a British Q-ship disguised as a fishing smack in August 1915.UB-4 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-4 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 tonnes (125 and 140 long tons), depending on whether surfaced or submerged.

SM UB-47

*33 merchant ships sunk
*1 merchant ship damaged
*4 merchant ships taken as prizes

*1 × propeller shaft
*1 × Daimler 4-cylinder diesel engine,
*1 × Siemens-Schuckert electric motor,

SM UB-29 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 31 December 1915. She was commissioned into the German Imperial Navy on 18 January 1916 as SM UB-29.The submarine sank 31 ships in 17 patrols for a total of 35,562 gross register tons (GRT). UB-29 was sunk by two depth charges from HMS Landrail south of Goodwin Sands at 51°9′N 1°46′E on 13 December 1916.

SM UB-18

scuttled off Sevastopol in the Black sea in 1919

SM UB-21

*Otto Molitor
* Freiherr Hugo von Seyffertitz

Surrendered, broken up.

*13 merchant ships sunk
*1 merchant ship damaged
*1 merchant ship taken as a prize

SM UB-44 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-44 operated in the Mediterranean and disappeared in August 1916.UB-44 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-44 was a about 37 metres (121 ft 5 in) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged.

SM UB-62

SM UB-65 was a Type UB III U-boat of the Imperial German Navy during World War I. Ordered on 20 May 1916, the U-boat was built at the Vulkan Werke shipyard in Hamburg, launched on 26 June 1917, and commissioned on 18 August 1917, under the command of Kapitänleutnant Martin Schelle.

SM UB-17 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The submarine disappeared during a patrol in March 1918.UB-17 was ordered in November 1914 and was laid down at the AG Weser shipyard in Bremen in February 1915. UB-17 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-17 was broken into sections and shipped by rail to Antwerp for reassembly. She was launched in April 1915 and commissioned as SM UB-17 in May.UB-17 spent her entire career in the Flanders Flotilla and sank 13 ships, most of them British fishing vessels. She also captured two ships as prizes and damaged one tanker. On 11 March 1918, UB-17 departed for a patrol in the Hoofden but was never seen again. There have been several suggestions as to UB-17's fate, but none match the U-boat's operation details.In July 2013, UB-17 was found off England's east coast, near the county of Suffolk by archaeologists.

SM UB-44 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-44 operated in the Mediterranean and disappeared in August 1916.UB-44 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-44 was a about 37 metres (121 ft 5 in) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 5-centimeter (2.0 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-44 was broken into railcar sized components and shipped to Pola where she was assembled and launched in April 1916 and commissioned in May.In two patrols in her three-month career, UB-44 sank one ship of 3,409 gross register tons (GRT). In early August 1916, UB-44 departed from Cattaro for Hersingstand and never arrived. Her fate is officially unknown, but she may have been sunk by a torpedo boat near the island of Paxoi on 8 August.

SM UB-19

SM UB-36 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 15 January 1916. She was commissioned into the German Imperial Navy on 22 May 1916 as SM UB-36.The submarine sank seven ships in twelve patrols. She herself was sunk in May 1917, but her fate is a matter of dispute.

Training Flotilla

SM UB-42 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-42 operated in the Mediterranean and the Black Seas during the war. She was broken up at Malta in 1920.UB-42 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-42 was 36.90 m (121 ft 1 in) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 5 cm (1.97 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-42 was broken into railcar sized components and shipped to Pola where she was assembled, launched and commissioned in March 1916.In 21 patrols during the war, UB-42 sank ten ships of 15,925 gross register tons (GRT), captured one 97-ton vessel as a prize, and damaged Veronica a British Acacia-class sloop. In October 1916, UB-42 delivered five Georgians who had gold to help finance a Georgian independence movement. After the surrender of the Ottoman Empire in late October 1918, UB-42 fled to Sevastopol, where she was surrendered in November. UB-42 was taken to Malta, where she was broken up in 1920.

Service record as UB-44

* Dietrich Niebuhr
* Hans von Mellenthin
* Horst Obermüller

broken up after testing in 1931

SM UB-31

*6 ships sunk
*6 ships damaged
*1 warship sunk

SM UB-154

UB-59

France

Pola Flotilla of the German Imperial Navy

* Herbert Lefholz
* Oblt. Waldemar von Fischer
* Karl Ruprecht
* Fritz Gregor

UB-28

SM UB-45 a u-boat similar to UB-25

SM UB-50 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 20 May 1916. She was commissioned into the Pola Flotilla of the German Imperial Navy on 12 July 1917 as SM UB-50.The submarine conducted seven patrols and sank 38 ships during the war for a total loss of 97,284 gross register tons (GRT). She operated as part of the Pola Flotilla based in Cattaro. UB-50 surrendered on 16 January 1919 with the remainder of the Pola Flotilla following an order by Admiral Reinhard Scheer to return to port. During her passage through the Straits of Gibraltar, she managed to sink the battleship HMS Britannia. UB-50 was later broken up at Swansea.

SM UB-51

SM UB-27 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 10 February 1916. She was commissioned into the German Imperial Navy on 23 February 1916 as SM UB-27. UB-27 sank 11 ships in 17 patrols for a total of 18,091 gross register tons (GRT).

SM UB-47 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-47 was sold to the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during the war.

UB-154

disappeared after 11 March 1918 Found in July 2013

SM UB-26 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 14 December 1915. She was commissioned into the German Imperial Navy on 7 January 1916 as SM UB-26. UB-26 was trapped in anti-submarine nets trailed by the French destroyer Trombe and was scuttled in Le Havre harbour on 5 April 1916.

SM UB-46 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-46 operated in the Mediterranean and the Black Seas, and was sunk by a mine in December 1916.UB-46 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-46 was a little more than 121 feet (37 m) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 5-centimeter (2.0 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-46 was broken into railcar sized components and shipped to Pola where she was assembled and launched in May 1916, and commissioned in June.In early December 1916, during the submarine's fifth patrol, UB-46 struck a mine in the Black Sea a short distance from the north entrance to the Bosphorus and sank with all hands. In her six-month career, UB-46 sank four ships of 8,099 gross register tons (GRT).

*7 merchant ships sunk
*2 merchant ships taken as prizes

Service record as UB-56

SM UB-150

SM UB-21 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 26 September 1915. She was commissioned into the German Imperial Navy on 20 February 1916 as SM UB-21. The submarine sank 33 ships in 26 patrols for a total of 36,764 gross register tons (GRT). Surrendered to Britain in accordance with the requirements of the Armistice with Germany, UB-21 sank in 1920 in the eastern Solent while en route to be broken up [1].

SM UB-149

SM UB-5

Surrendered to Britain, broken up 1922.

SM UB-39 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I.

* Ralph Wenninger
* Arthur Metz
* Werner Fürbringer
* Friedrich Moecke
* Ralph Wenninger
* Günther Suadicani
* Hans Degetau
* Ulrich Meier
* Georg Niemeyer
* Günther Wigankow
* Johannes Ries
* Albert Branscheid

surrendered 21 November 1918,broken upinSwanseain 1921

Seiner Majestät UB-4 was a German Type UB I submarine (U-boat) in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was sunk by a British Q-ship disguised as a fishing smack in August 1915.UB-4 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-4 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 tonnes (125 and 140 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-4 was broken into sections and shipped by rail to Antwerp for reassembly. She was launched and commissioned as SM UB-4 in March 1915.UB-4 conducted the first sortie of the Flanders Flotilla in April, during which she sank the Belgian Relief ship Harpalyce, the first ship credited to the flotilla. She sank three more ships from mid-April to mid-August. On 15 August, UB-4 surfaced near the British Q-ship Inverlyon and was sunk by gunfire from the sailing vessel. None of UB-4's 14 crewmen survived the attack.

SM UB-29

SM UB-61

SM UB-5 was a German Type UB I submarine or U-boat in the Imperial German Navy (German: Kaiserliche Marine) during World War I. She sank five ships during her career and was broken up in Germany in 1919.UB-5 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-5 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 tonnes (125 and 140 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-5 was broken into sections and shipped by rail to Antwerp for reassembly. She was launched and commissioned there as SM UB-5 in March 1915.UB-5 was initially assigned to the Flanders Flotilla in March 1915 and sank five British ships of 996 gross register tons (GRT) under the command of Wilhelm Smiths. The U-boat was assigned to the Baltic Flotilla in October 1915, and relegated to a training role from September 1916. At the end of the war, UB-5 was deemed unseaworthy and unable to surrender at Harwich with the rest of Germany's U-boat fleet. She remained in Germany where she was broken up by Dräger at Lübeck, Germany, in 1919.

* Heino von Heimburg
* Albrecht von Dewitz
* Heino von Heimburg
* Kurt Schwarz
* Ernst Ulrich
* Bodo Elleke

* 6 ships sunk
* 1 ship damaged

SM UB-36 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 15 January 1916. She was commissioned into the German Imperial Navy on 22 May 1916 as SM UB-36.The submarine sank seven ships in twelve patrols. She herself was sunk in May 1917, but her fate is a matter of dispute. Some sources claim that UB-36 was rammed and presumably sunk by the French steamer SS Molière in the English Channel off Ushant, France, on 21 May 1917. Other sources states that this in fact was SM UC-36 and that UB-36 struck a mine and sank elsewhere.

SM UB-60 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Training Flotilla of the German Imperial Navy on 6 June 1917 as SM UB-60.She operated as part of the Training Flotilla based in Kiel.

Wilhelm Smiths

*German Imperial Navy:
*Pola Flotilla, May – August 1916
*Constantinople Flotilla, August – November 1916

SM UB-64

British victory

SM UB-21 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 26 September 1915. She was commissioned into the German Imperial Navy on 20 February 1916 as SM UB-21. The submarine sank 33 ships in 26 patrols for a total of 36,764 gross register tons (GRT).

*World War I
**U-boat Campaign

SM UB-148

SM UB-36

surrendered 16 January 1919;broken upatSwansea

SM UB-54

SM UB-35

*36 merchant ships sunk
*3 merchant ships damaged
*2 merchant ship captured as prizes
*1 warship damaged

*German Imperial Navy
* Pola Flotilla
* Constantinople Flotilla

SM UB-5 was a German Type UB I submarine or U-boat in the Imperial German Navy (German: Kaiserliche Marine) during World War I. She sank five ships during her career and was broken up in Germany in 1919.UB-5 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-5 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 tonnes (125 and 140 long tons), depending on whether surfaced or submerged.

SM UB-33