A.ALRS B.ALL C.AMC D.ATT
A.to be destroyed B.to be demolished C.to be ruined D.to be spoiled
A.gives daily predictions of the times and heights of high and low water for a selection of Standard Ports B.lists the principal harmonic constants for all those ports where they are known,for use for prediction by the Simplified Harmonic Method of Tidal Prediction C.is a comprehensive guide for the yachtsman D.permits the mariner to select and simultaneously calculate tidal heights for multiple ports for up to seven days