The Assassin-class Corvette, better known as the Modified Corvette, was a small warship first produced some time before the Battle of Hoth and used primarily by the Imperial Navy.
Designed as a more militarized successor to the famous CR90 Corellian Corvette, the Assassin-class shared the familiar "hammerhead" styling, but it was more streamlined for greater hull strength.
In addition to a stronger hull, the Assassin had more resilient shields and heavier firepower. Though it shared a similar 4-3-4 engine layout, it had eight large outer engines and three small inner engines as opposed to the CR90's eleven nearly identical engines. Much of its cargo space has also been sacrificed so that it may carry up to four starfighters into battle.
The Assassin-class was used alongside the CR90 in system patrol squadrons to repel pirates and Rebel attacks on convoys and space stations. It was also used by the Rebels in hit-and-fade operations and by several groups as a transport for high-priority cargo and personnel.