The Almanac is arranged in parts that are numbered for ready reference from I to VII as follows:- I, Astronomical data in daily use by navigators, explanations of its use. II, Nautical Tables and Methods. III, Tide Tables for Home and Foreign Waters. Predictions have been compiled by the most reliable authorities as acknowledged. The Tidal Constants for British Isles and Foreign Ports. IV, Coastal Courses and Distances around the British Isles. Courses are given Correct Magnetic (2017) and in True (3-figure) notation. Distances are given to the nearest 0.25 of a mile. The Table of Courses and Distances around the British Isles, North Sea, English Channel and the Baltic Ports. V, Distance Tables giving a world-wide coverage of total distances from the principal ports of Britain, U.S.A. and Canada, to all important ports of the world. Numerous other tables give inter-port distances in the important areas. VI, Maritime Information, Legal, Technical and General. Lights, Beacons and Buoys of the British Isles including Eire and Channel Isles. Pilotage information. VII, Miscellaneous Information.A mass of Valuable Matter for the Merchant Navy, Yachtsmen, Shippers, Shipping Offices, etc. Used round the world every day throughout the year. Also includes full details of the GMDSS Master Plan, fully updated Offshore Installations for both wind farms and oil rigs around the coast of the UK and updated meteorological information.