You can help expand this article with text translated from the corresponding article in Finnish. (June 2023) Click [show] for important translation instructions.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Finnish Wikipedia article at [[:fi:Ruotsinsalmen merilinnoitus]]; see its history for attribution.
You may also add the template {{Translated|fi|Ruotsinsalmen merilinnoitus}} to the talk page.
Ruotsinsalmi sea fortress is composed of a number of separate forts, redoubts, and artillery batteries. The main fortress was the Fort Katarina located on the southern part of Kotkansaari island in the present-day Katariina neighbourhood. Other larger forts were Fort Elisabeth in Varissaari island and Fort Slava in Kukouri island. Remnants of smaller forts can also be found, for example, in Tiutinen island.
.JPG){kind=small}
