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Learn the Sea
Tidal curve worksheet
learnthesea.com
Work the standard-port tidal curve method: enter HW and LW, mark them on the grid, draw the line between, and read off through the curve.
Standard port
Date
Springs / neaps
Range (m)
HW — time
HW — height
LW — time
LW — height
Plot
Height up the side, hours from HW along the bottom. Mark HW and LW heights, join them, and read through the curve.
Answer
Required: height at time …
Answer (m)
Required: time for height …
Answer (time)