Torpedo platform

The term torpedo platform was applied to large warships in use before and during the Clone Wars, prior to the development of modern planetary-bombardment turbolaser technology with the Eye of Palpatine in around 19 BBY. As their name suggests, these massive ships were armed primarily with proton torpedoes and other missile weapons.

Behind the Scenes
The term "torpedo platform" occurs only once in Star Wars canon when Irek Ismaren describes the Eye of Palpatine as "the prototype transiton between the torpedo platforms and the original Death Star" (Children of the Jedi, Chapter 21). Various other references in the novel suggests that the Eye of Palpatine was the first ship equipped with effective planetary-bombardment beam weapons, and it may be that the torpedo platforms included such Prequel-era ships as the Procurator-class Star Battlecruiser and Mandator-class Star Dreadnought.