The Fury is a triple-decked war galley of three hundred oars. It is owned by Stannis I.  It is the flagship of Stannis' fleet.
Stannis commanded the assault on Dragonstone from the decks of the Fury during Robert's Rebellion.
It is seen berthed between the Stag of the Sea and Lord Steffon in the harbor at Dragonstone. During the Battle of the Blackwater, Ser Imry Florent commanded Stannis's fleet from the Fury.