The Tone
From Wookieepedia, the Star Wars wiki.
The Tone was an Imperial BFF-1 bulk freighter bearing supplies as part of a larger convoy that gathered near Orron III en route to the soon-to-be-finished Death Star I. The convoy was due to rendezvous with the freighter Toral which was attacked on the way by Rebel forces. Learning of the rendezvous location from the Toral, the Rebels dispatched Y-wings from Red and Gold squadrons, along with a X-wing from Blue Squadron to destroy the convoy.
Despite heavy resistance from the escorting Assault Gunboats, The Tone, along with the rest of the convoy, was destroyed by the Rebel ships.
[edit] Behind the scenes
One real navy vessel named the Tone was the Imperial Japanese Navy's heavy cruiser Tone in World War II.
