Blue at the Mizzen

Blurb

The novel Blue at the Mizzen is the twentieth and last completed historical novel in the Aubrey-Maturin series by Patrick O'Brian, first published in 1999. It is set after the Napoleonic wars, in the fight for Chilean independence from Spain.
Aubrey and Maturin, having heard the details of Napoleon's defeat at Waterloo, set sail for the dual mission of charting the Chilean coast and aiding those who seek independence from Spain.