Inspired by the complimentary thread here elsewhere, entitled "Biggest Loser" (should probably be "biggest LoserS") I'd like to encourage submissions here for the winners circle; warships of any era.
One of my favorites is the "Mercury', an early 19th century Russian naval brig. She was less than 100' LOA, and carried 18 guns (20 if you want to count a couple of 8 pounders. In the Strait of Bosphorus she engaged two Turkish ships of the line carrying between them 184 guns, damaged the rigging on both to a degree enabling her escape.
The navigator of the Turkish 110 gun ship stated after the encounter, "If in the great deeds of ancient or our times there are the feats of bravery, so this act put the others in the shade and the name of a hero should be wrote by the gold letter in the shrine of glory: the captain was Kazarsky, and the name of this ship was 'Mercury'"
I believe Amati still sells a kit of this gallant vessel.