The latest known details of lights are given in（）.
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 day
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