In addition to the information supplied in a typical almanac, Witherbys Nautical Almanac includes: Country information, including time zone, population, currency, International dialing codes and details of their merchant fleet extracts from a booklet ‘Celestial Navigation Explained’ that takes you from the basics to resolving a cocked hat problem a worked example on using the ‘Concise Sight Reduction tables of The Nautical Almanac’ formulae and conversion factors update on bridge equipment required, AIS, ARPA, BNWAS, ECDIS, GALILEO, VDR and GMDSS the use and care of the sextant the use and care of an azimuth mirror worked navigational examples using the Witherbys Nautical Almanac colour star charts.