The Patrick O'Brian Page
Official site from W.W. Norton and Co. (POB's American publisher). Includes information on the POB listserv, a short FAQ, copies of the POB newsletter, and a discussion forum.
http://www.wwnorton.com/pob/pobhome.htm

Danny Yee's Book Reviews: Patrick O'Brian
Reviews, including the less well-known Joseph Banks and The Golden Ocean.
http://dannyreviews.com/a/Patrick_O'Brian.html

A Guide for the Perplexed
Translations of all Non-English phrases in Patrick O'Brian's Sea-Tales.
http://www.hmssurprise.org/Companion/pob-tr.html

O'Pinions and O'Bservations O' O'Bscure O'Briania
Reviews and comments on the short stories and other obscure writings of Patrick O'Brian.
http://jfinnera.www1.50megs.com/pob.html

A Cookbook to Treasure
Marilyn McDevitt Rubin reviews "Lobscouse and Spotted Dog", a collection of recipes fetched from the Aubrey-Maturin novels.
http://www.post-gazette.com/columnists/20030209rubin0209fnp1.asp

Maturin's Medicine
A glossary of medical terms in the Aubrey-Maturin books.
http://www.alia.org.au/~kwebb/Maturin/

The Patrick O'Brian Compendium
Features "The Butcher's Bill," a 286-page summary of the Aubrey/Maturin novels, as a PDF download.
http://www.patrickobrian.com/

The Ships of Jack Aubrey
Specifications and plans for the ships (or similar real ships) commanded by Aubrey in the novels.
http://members.aol.com/batrnq/index.htm

Patrick O'Brian Discussion Archives
Archives of listerserv dedicated to discussion of the works of Patrick O'Brian.
http://mat.tepper.cmu.edu/POB/

The Gunroom of HMSSurprise.org
Home for a group of Patrick O'Brian's readers who enjoy discussion of his works.
http://www.hmssurprise.org/