199 pp., numerous illustrations including colourDerek Howse, Greenwich Time and the Longitude £11.95 sftbk.—available only from National Maritime Museum, Greenwich, London SE10 ISBN 0-948065-26-5, Philip Wilson, Postbox 298, Roskilde 4000, Denmark (1997) ISBN 0-85667-468-0 £11.95 sftbk.—available only from National Maritime Museum, Greenwich, London SE10 ISBN 0-948065-26-5.