Day Skipper revision module 11 of 17

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Tides & Tidal Streams

Tidal heights, tidal curves, tidal diamonds, stream atlases, and secondary port corrections.

Tidal diamonds and tidal stream atlasesAdmiralty method for tidal height at standard port

8 guided lessons · 16 practice questions · 15 flashcards

3 outcomes · self-guided revision
  • Explain why astronomical forcing produces tides while local coastlines and water depth determine the times and heights used aboard.
  • Distinguish spring and neap tidal ranges and use local predictions rather than assuming a universal delay after a Moon phase.
  • Relate charted soundings, drying heights, tidal height and overhead clearance to the datum stated on the chart.

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Study this topic deliberately

Secure outcome
Separate predictions, corrections, height of tide, charted depth and final clearance.
Common mistake
Using the wrong time zone, curve, port correction or datum relationship.
Best next practice
Label every value and finish with a depth and timing sense check.

Related practice and explanations

Practice tidal heightsRead a fictional curve and get worked feedback.Read the tidal calculation guideCheck datum, secondary ports, signs and units.
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