The Flattery C-19 is a short ranger Undercutter with Moling capability. A small starship (skiff) seemingly well-suited for mercenary work. These ships are typically crewed by a captain, a navigator, and two gunners.
Toombs possessed one of these ships, most likely stolen from the Kublai Khan, he and another bounty hunter both hunted Riddick in ships of this type. When Toombs found Riddick on U.V. 6 his crew was taken out and Riddick stole the ship so he could travel to Helion Prime.