SM ''UB-91'' was a German Type UB III submarine or

U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role ...

in the

German Imperial Navy The Imperial German Navy or the Imperial Navy () was the navy of the German Empire, which existed between 1871 and 1919. It grew out of the small Prussian Navy (from 1867 the North German Federal Navy), which was mainly for coast defence. Kaiser ...

(german: Kaiserliche Marine) during

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

. She was commissioned into the German Imperial Navy on 11 April 1918 as SM ''UB-91''.) and combined with the ''U'' for ''Unterseeboot'' would be translated as ''His Majesty's Submarine''., group=Note On 4 October 1918 ''UB-91'' sank the , killing among others, Yokohama Specie Bank sub-manager S. Ujie, his wife and three sons, together with bank employee Takashi Aoki and wife Sueko.

Construction

She was built by AG Vulcan of

Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...

and following just under a year of construction, launched at Hamburg on 6 March 1918. ''UB-91'' was commissioned later the same year . Like all Type UB III submarines, ''UB-91'' carried 10

torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, su ...

es and was armed with a deck gun. ''UB-91'' would carry a crew of up to 3 officer and 31 men and had a cruising range of . ''UB-91'' had a displacement of while surfaced and when submerged. Her engines enabled her to travel at when surfaced and when submerged.

Service history

''UB-91'' was surrendered to Britain on 21 November 1918 at

Harwich Harwich is a town in Essex, England, and one of the Haven ports on the North Sea coast. It is in the Tendring district. Nearby places include Felixstowe to the north-east, Ipswich to the north-west, Colchester to the south-west and Clacton-on- ...

. She toured the

South Wales South Wales ( cy, De Cymru) is a loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the historic counties of Glamorgan and Monmouthshire, south Wales extends westwards ...

ports of

Cardiff Cardiff (; cy, Caerdydd ) is the capital and largest city of Wales. It forms a principal area, officially known as the City and County of Cardiff ( cy, Dinas a Sir Caerdydd, links=no), and the city is the eleventh-largest in the United Kingd ...

Newport Newport most commonly refers to: *Newport, Wales *Newport, Rhode Island, US Newport or New Port may also refer to: Places Asia *Newport City, Metro Manila, a Philippine district in Pasay Europe Ireland *Newport, County Mayo, a town on the ...

Swansea Swansea (; cy, Abertawe ) is a coastal city and the second-largest city of Wales. It forms a principal area, officially known as the City and County of Swansea ( cy, links=no, Dinas a Sir Abertawe). The city is the twenty-fifth largest in ...

, Port Talbot and was towed to

Pembroke Dock Pembroke Dock ( cy, Doc Penfro) is a town and a community in Pembrokeshire, South West Wales, northwest of Pembroke on the banks of the River Cleddau. Originally Paterchurch, a small fishing village, Pembroke Dock town expanded rapidly following ...

, eventually being broken up in

Briton Ferry Briton Ferry ( cy, Llansawel) is a town and community in the county borough of Neath Port Talbot, Wales. The Welsh name may indicate that the church, ''llan'', is protected from the wind, ''awel''. Alternatively, ''Sawel'' may be a derivative ...

in 1921.

King George V George V (George Frederick Ernest Albert; 3 June 1865 – 20 January 1936) was King of the United Kingdom and the British Dominions, and Emperor of India, from 6 May 1910 until his death in 1936. Born during the reign of his grandmother Que ...

presented her deck gun to the town of Chepstow by in recognition of the bravery of

William Charles Williams William Charles Williams Victoria Cross, VC (15 September 1880 – 25 April 1915) was a British recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to United Kingdom, ...

RN VC at

Gallipoli The Gallipoli peninsula (; tr, Gelibolu Yarımadası; grc, Χερσόνησος της Καλλίπολης, ) is located in the southern part of East Thrace, the European part of Turkey, with the Aegean Sea to the west and the Dardanelles ...

in 1915. The gun forms part of the Chepstow War Memorial.

Summary of raiding history

References

Notes

Citations

Bibliography

* * * {{DEFAULTSORT:Ub091 German Type UB III submarines World War I submarines of Germany U-boats commissioned in 1918 1918 ships Ships built in Hamburg