The Scorpion-class vessels were small shuttlecraft in use aboard the Reman warbird Scimitar in 2379. When Captain Jean-Luc Picard was captured and taken aboard the Scimitar by the new Praetor - Shinzon, a clone of Picard - the captain used a Scorpion-class vessel to escape. Although he initially found the craft difficult to maneuver, he eventually managed to drive the vessel through one of the Scimitar's bulkheads and escape into space, where the craft was beamed aboard the Sovereign-class starship Enterprise.
The Scimitar's shuttlebay, where the Scropion-class vessels were stored, was later destroyed when the Enterprise and the Scimitar collided. (Star Trek: Nemesis)