HSwMS ''Östergötland'' (Ögd), is a

submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...

of the

Swedish Navy The Swedish Navy () is the maritime service branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet (), formally sometimes referred to as the Royal Navy () – as well as marine units, the Amph ...

named after

Östergötland Östergötland (; English exonym: East Gothland) is one of the traditional provinces of Sweden (''landskap'' in Swedish) in the south of Sweden. It borders Småland, Västergötland, Närke, Södermanland and the Baltic Sea. In older English li ...

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

. She is the fourth and last ship of the .

Development

The submarine design combined the best properties from the and the . Submarines of the ''Västergötland'' class had greater submarine hunting capacity than previous classes, partly due to the fact that they were equipped with a new modern submarine

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

. The submarines of the ''Västergötland'' class were able to fire up to six heavy and six light wire-guided torpedoes at the same time against different targets. The ''Västergötland'' class included the submarines and ''Östergötland''. After significant upgrades, these two submarines were reclassified to a new .

Service history

Between 2000 and 2004, ''Östergötland'' and ''Södermanland'' underwent extensive modifications, were extended by 12 meters and fitted with air-independent Stirling engines. At the same time, the submarines would be modified to handle international missions with operations in hot and salty waters. The conversion of the two submarines became so extensive that Kockums decided to reclassify the submarines to a new ''Södermanland'' class. ''Östergötland'' was decommissioned in 2021.

References

Västergötland-class submarines Ships built in Malmö 1988 ships {{submarine-stub