Preface: Developments in the science and history of tides

Abstract. This special issue marks the 100th anniversary of founding Liverpool Tidal Institute (LTI), one a number important scientific developments in 1919. The preface gives brief history how LTI came about and roles its first two directors, Joseph Proudman Arthur Doodson. It also short overview research on tides at through years. Summaries are given 26 papers issue. will be seen that topics many them could thought as providing continuation undertaken LTI. Altogether, they provide an interesting snapshot work now being made by groups around world.