USS Lassiter

The USS Lassiter and the Potemkin were the two main Starfleet starships which comprised the initial response to the Borg/Cybermen invasion of Delta IV. It was destroyed almost immediately. (IDW: Assimilation²)

Behind the scenes
Though not seen in any great detail, the ship appeared to be of the Excelsior class, perhaps most famous as the kind of ship Hikaru Sulu eventually captained in Star Trek VI.