This is a complete set of the Patrick O'Brien seafaring novels based on the Napoleonic period adventures of Jack Aubrey and Stephen Maturin.

The completed 20 Novels are as follows:

- Master & Commander
- Post Captain
- HMS Surprise
- The Mauritius Command
- Desolation Island
- The Fortunes of War
- The Surgeons Mate
- The Ionian Mission
- Treasons Harbour
- The Far Side of the World
- The Reverse of the Medal
- The Letter of Marque
- The Thirteen Gun Salute
- The Nutmeg of Consolation
- Calrissa Oakes
- The Commodore
- The Yellow Admiral
- The Hundred Days
- Blue at the Mizzen

All of these are first printing, free from inscriptions, blemishes or markings.

A few of the slipcases show minor signs of shelf ware, with one (photograph) with a red mark on the side. Just one slipcase has a minor bump to the corner.

Patrick O'Brian, born Richard Patrick Russ, was an English novelist and translator, best known for his Aubrey–Maturin series of sea novels set in the Royal Navy during the Napoleonic Wars, and centered on the friendship of the English naval captain Jack Aubrey and the Irish–Catalan physician Stephen Maturin. The 20-novel series, the first of which is Master and Commander, is known for its well-researched and highly detailed portrayal of early 19th-century life, as well as its authentic and evocative language. A partially finished 21st novel in the series was published posthumously containing facing pages of handwriting and typescript.