''O 23'', laid down as ''K XXIII'', was an of the

Royal Netherlands Navy The Royal Netherlands Navy ( nl, Koninklijke Marine, links=no) is the naval force of the Kingdom of the Netherlands. During the 17th century, the navy of the Dutch Republic (1581–1795) was one of the most powerful naval forces in the world an ...

that saw service during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. During the war she sank and damaged several ships.

Ship history

The submarine was ordered on 9 June 1937 and laid down on 12 October 1937 as ''K XXIII'' at the '' Rotterdamsche Droogdok Maatschappij'',

Rotterdam Rotterdam ( , , , lit. ''The Dam on the River Rotte'') is the second largest city and municipality in the Netherlands. It is in the province of South Holland, part of the North Sea mouth of the Rhine–Meuse–Scheldt delta, via the ''"N ...

. During construction she was renamed ''O 23'', and was finally launched on 5 December 1939. Following the German invasion of 10 May 1940, ''O 23'' was hastily commissioned, still incomplete, and sailed for England on 13 May to be completed at the

Thornycroft Thornycroft was an English vehicle manufacturer which built coaches, buses, and trucks from 1896 until 1977. History In 1896, naval engineer John Isaac Thornycroft formed the Thornycroft Steam Carriage and Van Company which built its firs ...

shipyard at

Southampton Southampton () is a port city in the ceremonial county of Hampshire in southern England. It is located approximately south-west of London and west of Portsmouth. The city forms part of the South Hampshire built-up area, which also covers Po ...

. During the war she operated in the

North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian S ...

, the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ea ...

and the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th ...

. ''O 23'' made twenty patrols during the war in the course of which she sank or damaged five ships. She survived the war and was decommissioned on 1 December 1948, being sold for scrap in April of the following year.

Summary of raiding history

Ships sunk and damaged by ''O 23''.

References

{{DEFAULTSORT:O 23 1939 ships Ships built in Rotterdam World War II submarines of the Netherlands O 21-class submarines Submarines built by Rotterdamsche Droogdok Maatschappij