Tides & Tidal Streams

• Explain why astronomical forcing produces a local tide rather than a universal timetable, and select the correct dated prediction for a coastal decision.
• Use the predicted spring-neap range to anticipate depth change and stream strength without assuming a universal lunar delay or equinox maximum.
• Put soundings, drying heights, tidal heights and overhead clearances on their stated vertical references before making a depth or clearance decision.

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