www.mercators4corners.com ­ where you can purchase excellent historical sea charts very similar to those used by Jack Aubrey www.nmm.ac.uk ­ The National Maritime Museum, a national treasure www.rog.nmm.ac.uk ­ Royal Observatory Greenwich where the very first sea-worthy chronometers are displayed www.greenwichfoundation.org.uk ­ once the Navy's hospital, the Old Royal Naval College is now part of the Maritime Greenwich World Heritage site www.thegarret.org.uk - the only surviving 19th century operating theatre in Britain, where Dr Maturin's followers practised www.somerset-house.org.uk ­ where once the Navy Board and the Royal Society resided www.royalnavalmuseum.org ­ Jack Aubrey once passed the salt to a gentleman called Nelson, whose flagship at Portsmouth is incomparable www.hmssurprise.org ­ an inspiring site for O'Brian devotees www.io.com/gibbonsb/pob/ - an all-embracing compendium of O'Brian sites http://williamcalvin.com/bookshelf/POB.htm - for an appreciation of the Aubrey-Maturin novels and some particularly commendable extracts http://home.wxs.nl/~pdavis/ - free Windows software to download which simulates sailing Captain Aubrey's HMS Surprise http://www.patrickobrian.com/ - the Patrick O'Brian compendium of elegant links to elegant sites http://www.btinternet.com/~lawrence.edwards/tallships/pob/pob.htm - a site devoted to Patrick O'Brian's books, designed by an enthusiast when he's not sailing tall ships http://www.tallship.co.uk - an excellent magazine which deals with all aspects of traditional boats and tall ships http://warriorsatsea.rxss.com - for inspiration now the Aubrey-Maturin series has come to an end