This lore can be found by a Trooper on Corellia.
By far the biggest attraction at the Corellian Museum of Starships is the assault shuttle “The Lucky Lancer.” This Rendaran-class vessel–a predecessor to the modern Fortitude class–flew over one hundred combat missions during the last war; by comparison, the second-most famous starship on display survived ten missions. Whether through the quality of her crew or the whims of fate, The Lucky Lancer more than lived up to her name. The ship’s most celebrated mission involved delivering a payload of improvised short-range torpedoes created from transparisteel tubing and hundreds of thermal detonators. The Lucky Lancer threaded a deadly gauntlet of Imperial starfighters to close to within a kilometer of the enemy’s flagship. The payload was delivered directly into the Imperial vessel’s engines, destroying it in one shot.