LIVERPOOL RESEARCH NAUTICAL SOCIETY 11 All Delight Is in Masts
LIVERPOOL NAUTICAL RESEARCH SOCIETY 11 All delight is in masts and oars and trim ships to cross the stormy sea" - ODYSSEY. NEWS, NarES AND CVERIES Vol.II (New Series) No.l. January-February 1958 DECEMBER MEETING Dr.A.T.Doodson, C.B.E., F.R.S., the Director of the Tidal Institute at Bidston, gave the Society a most interesting talk on the work of the Institute, illustrated by a variety of lantern slides, at the meeting on December 12th, on board the "Landfall". He began by explaining, with the aid of diagrams, the nature of the tides. He described the effect of the sun and the moon on the tide, nnd how they reacted together to produce spring and neap tides. Then he turned to the question of tidal prediction, which is the main work of the Institute at Bidston. He described the tidal predicting machine developed by himself and his collc~ at the Institute. This apparatus is fed with data which it uses to obtain the required prediction. Dr.Doodson showed illustr~tions of the machine, which appeared very complex. .Many examples of this tidal predicting machine have been made to his design and sent to foreign countries, including Russia. Dr .Doodson also described the preparation of tidal maps, which show the movement of the tides over largo areas of sea, by means of tinted layers. The Institute is regarded as the principal tidal authority in the world and as it is responsible for tidal predictions for near ly all the ports of the COIIIDonweal th (except India) , as well as for many other small countries, its output far exceeds that of any other institution.
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