Ganymede

In the third installment of Cherie Priest's Clockwork Century series, air pirate Andan Cly attempts to go straight while still making a living off questionable dealings. He takes on a risky supply run for the Seattle Underground, which leads him back to New Orleans and an old flame, Josephine Early. Tasked with piloting a mysterious and deadly submersible, the Ganymede, Cly must navigate treacherous waters and the dangers of war, all while confronting his past and fighting for survival. As Cly and his crew face unpredictable challenges, the outcome of their mission could change the course of history.