The Sémillante was a Surveillante class 60-gun first rank frigate of the French Navy. She sank off the coast of Corsica in 1855 with a loss of 693 people.
Wikipedia https://en.wikipedia.org/wiki/French_frigate_Sémillante_(1841)
Coordinates 41°20'20.762" N 9°15'12.765" E
