From the National Museum of the U.S. Navy:
Painting titled “Decatur Boarding the Tripolitan Gunboat” by Dennis Malone Carter. United States Navy Lieutenant Stephen Decatur and his men from USS Enterprise attacking the Barbary pirate ketch Mistico on 23 December 1803.
That descriptor above the painting may be in error.
Young Decateur was a boarding-and-capturing kind of guy. According to American Heritage this is one of his 1804 captures.