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Module 4 · TIDES

Tides & Tidal Calculations

Why the sea rises and falls, how to work out the height of tide anywhere and anytime, and how moving water affects your course over the ground.

6 lessons · about 2.8 hours

Lessons

  1. How Tides WorkSprings, neaps and the astronomy behind the tides.25m
  2. Tide Tables and Heights of TideChart datum, tidal levels, and finding depths from tide tables.30m
  3. The Rule of TwelfthsA quick mental model for the rise and fall between high and low water.20m
  4. Tidal CurvesUsing standard port curves to find height at a time, or time for a height.35m
  5. Secondary PortsApplying time and height differences to standard port data.30m
  6. Tidal StreamsTidal stream atlases and diamonds: which way the water is moving, and how fast.30m