Now in its second edition, this expanded work catalogues every person, animal, ship and cannon mentioned by name in the 21 books of Patrick O'Brian's series on the maritime adventures of Jack Aubrey and Stephen Maturin. The novels, renowned for their ""far-ranging web of wit and allusion,"" teem with thousands of characters and ships, both imaginary and historical.

From Master and Commander to 21: The Unfinished Voyage, this book distinguishes the fictional from the factual, making a useful series companion for the casual reader and the most ardent fans. Each of the more than 5,000 alphabetized entries provides a reference to the novels and chapters in which the topic appears. Additionally, biographical notes on the historical figures are included, with sources provided in an annotated bibliography.