A Feast for Crows
The Sweet Cersei is one of the ships being built in King's Landing as part of Queen Cersei Lannister's plan to augment the royal fleet instead of relying on the traditional sea powers within the Seven Kingdoms to defend the crown's interests. The Sweet Cersei is to be the equal of King Robert's Hammer. It is assigned the duty of taking Ser Loras Tyrell to Dragonstone. During her imprisonment by the Faith of the Seven, Cersei is visited by Qyburn, who tells the queen that Aurane Waters fled King's Landing with the new ships after her arrest.
A swift ship, and as strong as the queen she's named for.