For me, it is the WW2 version of "ORP Orzeł"(ORP Eagle).
Incredible story from the begining to the end.
Everything started with "Operation Worek", which was followed up by the incredible escape from Tallin to England without seacharts. "ORP Orzeł" also torpedoed the German transport ship Rio de Janeiro thus unfolding the invasion on Norway.
She was later lost with all hands, it's still unknow until today how and where she was lost.
If someone would like to know more about "ORP Eagle" I recommend this webpage:
http://www.orzel.one.pl/viewpage.php?page_id=25