So here ends the Aubrey-Maturin epic saga, though a further book was left incomplete at the time of O'Brian's death. It's a good thing, really. The struggle to find anything original for the pair to do, growing ever more difficult since as far back as book 11, had by this point proved impossible. With the Napoleonic Wars over, reasons for further voyages were also getting contrived. Maturin's drug abuse with no real consequence was getting a little preposterous. Hence ending on the upbeat note of Aubrey finally gaining his Admiral's flag and sailing off to take up command of a squadron on a ship-of-the-line seems the perfect conclusion.