Definition
Published in regional volumes, Part I gives daily predictions for standard ports and Part II gives time and height differences for secondary ports, together with harmonic constants and information on tidal levels such as MHWS, MHWN, MLWN and MLWS. Volume 1 covers the United Kingdom and Ireland. Predictions are astronomical only and are given in a stated time zone, so seasonal clock changes and meteorological effects must be applied by the navigator.
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