List of hunts for foreign submarines in Swedish territorial waters: <a href="https://en.wikipedia.org/wiki/Swedish_submarine_incidents" rel="nofollow">https://en.wikipedia.org/wiki/Swedish_submarine_incidents</a><p>One ran aground in 1981: <a href="https://en.wikipedia.org/wiki/Soviet_submarine_S-363" rel="nofollow">https://en.wikipedia.org/wiki/Soviet_submarine_S-363</a>