You talking about that light cruiser of Gideon's? My girlfriend laid claim to that early on in the episode, saying the ship was hers to help reclaim Mandalore (she's got a bit of a hi-jacking/stealing fetish, doesn't she? She also stole that Imperial freighter from the harbor in "The Heiress" episode). She gets onto a ship, kills (or helps kill) everyone on it and then claims it as her own.
Apparently she's amassing a fleet (and weaponry) for her big move. She's probably got dozens tucked away somewhere.
You go, Bo!