The Final Unfinished Voyage of Jack Aubrey is the unfinished twenty-first historical novel in the Aubrey-Maturin series by English author Patrick O'Brian, first published in its incomplete form in 2004. It appeared in the United States of America under the title of 21.

Though this is the early part of an unfinished novel, reviewers examined it. Some took the opportunity to look back at the whole series of completed novels, 6,443 pages by one count. They are pleased to see that Sam Panda, Aubrey's son from his "long-legged youth" and now going by Sam Mputa, his mother's last name, is a papal nuncio, and that Maturin pursues Christine Wood and again sees his daughter Brigid, who is beginning to hold her own with her older cousins, the Aubrey twin girls. The sailors and the families of Maturin and Aubrey get as far as the island of Saint Helena, where Napoleon is firmly exiled, and there the writing stops, with no hint of what might have happened in South Africa, had the squadron arrived there. There is wide acclaim for the afterword by Richard Snow, included in the book.

The Final Unfinished Voyage of Jack Aubrey

Editor's note, foreword and afterword

The published work appears with an "Editor's Note" by Starling Lawrence and an Afterword by Richard Snow, who had written an influential review of the series in the New York Times Book Review many years before. Commentators have credited Snow's review with helping to popularize the series in the United States.

The Final Unfinished Voyage of Jack Aubrey

There is a foreword in UK editions by William Waldegrave.

The Final Unfinished Voyage of Jack Aubrey

Plot summary

The story begins with Surprise in the Strait of Magellan, caught up in foul weather. Hanson first spots Cape Pilar at the very opening of the Strait, and soon Surprise moors and conducts some trade with the inhospitable locals for meat and vegetables. Having re-provisioned, she and Ringle sail northwards in fine weather until they enter the River Plate and moor close to the island functioning as the main administrative centre. A quarantine officer comes aboard and gives the frigate a clean bill of health.

Wantage (a character killed and buried at sea in chapter six of the preceding book: Blue at the Mizzen) informs Maturin of a rumpus in the town: a fight between Protestant mariners from a Boston barque clash with the Catholic locals over the right of polygamy. Further signs of local resentment emerge when a large scow dumps the town's filth next to the frigate and the Portuguese sailors shout abuse at the Surprises. Aubrey sees the Papal legate on the shore, preparing to bless the town's ships, and recognises him as his own natural son Sam. As the Papal Nuncio to the Republic of Argentina, the Most Reverend Doctor Samuel Mputa had recently saved the government from an open rebellion.

The South African squadron, under its Commander-in-Chief Admiral Lord Leyton, makes its appearance. Taking command of the blue squadron, Aubrey boards his new flagship, , seeing his blue rear admiral's flag hoisted on the mizzen mast. He has an interview with the cantankerous Admiral, who wants to send two of his officers and a midshipman home to England on Surprise. Aubrey explains that he does not own the Surprise, a private vessel once more, but ultimately pledges Maturin's consent in exchange for enough prime hands to man the shorthanded Suffolk, its crew having been reduced by disease. Aboard Surprise, Aubrey tells the assembled hands that he can take 63 volunteers over to join him on Suffolk, and receives cheers.

While the fleet re-provisions, Ringle sails to England under the steady and capable Lieutenant Harding, and returns with Sophie Aubrey, Christine Wood, her brother Edward Heatherleigh, Maturin's daughter Brigid, and Aubrey's twins Fanny and Charlotte, all of whom will sail with Aubrey and Maturin to South Africa. The three girls had not been getting along well, with the Aubrey twins jealous of any attention their mother gives to young Brigid, a concern to both fathers. Brigid is a natural sailor, having been on the Ringle at a very young age for her voyage to Spain and on the packet to return to England. The twins are seasick most of the way to the River Plate, whereas Brigid is at home, friends with the sailors and ready with answers to everything aboard ship. When they meet their father, the twins have shed the jealousy and begin to have a kinder connection with their cousin Brigid.