Sul-34
Sul-34 was a Navigation Buoy that served as a hyperjump point.
History
It was used by several Rebel starships on their way to rendezvous with the Alliance Fleet near Sullust in preparation for the Battle of Endor. Darth Vader sent Maarek Stele to lead a group of Missile Boats, along with Assault Gunboat escorts, in an ambush to destroy the first three Rebel capital ships to arrive, weakening their forces and delaying their assault while they waited for reinforcements.