SM ''U-23'' was one of the 329

U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...

s serving in the

Imperial German Navy The Imperial German Navy or the ''Kaiserliche Marine'' (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 ...

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. ''U-23'' was engaged in the

naval warfare Naval warfare is combat in and on the sea, the ocean, or any other battlespace involving a major body of water such as a large lake or wide river. The Military, armed forces branch designated for naval warfare is a navy. Naval operations can be ...

and took part in the

First Battle of the Atlantic The Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atla ...

. ''U-23'' served on three war patrols, sinking a total of seven ships for . She was baited by the

Q ship Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open fire ...

''Princess Louise'' and torpedoed by at , off

Fair Isle Fair Isle ( ; ), sometimes Fairisle, is the southernmost Shetland island, situated roughly from the Shetland Mainland and about from North Ronaldsay (the most northerly island of Orkney). The entire archipelago lies off the northernmost coa ...

, in

Shetland Shetland (until 1975 spelled Zetland), also called the Shetland Islands, is an archipelago in Scotland lying between Orkney, the Faroe Islands, and Norway, marking the northernmost region of the United Kingdom. The islands lie about to the ...

, Scotland. Twenty four men died and 10 survived.

Summary of raiding history

References

Notes

Citations

Bibliography

* {{DEFAULTSORT:U0023 World War I submarines of Germany Maritime incidents in 1915 U-boats sunk in 1915 1912 ships Ships built in Kiel U-boats sunk by British submarines Type U 23 submarines U-boats commissioned in 1913 World War I shipwrecks in the Atlantic Ocean Shipwrecks of Scotland 1915 in Scotland Fair Isle History of Shetland