Chart Navigation & Plotting · Tides — Spring and Neap
Spring tides (the largest range) occur:
- AAt the first and last quarter moon
- BOnly in spring season
- CNear new and full moon, when sun and moon align✓ Correct
- DAt neap tide
Explanation
Spring tides occur near new and full moon when the sun and moon act in line, giving the greatest range. Neap tides (smallest range) occur at the quarter moons when their effects are at right angles.
Authority: Bowditch (Pub. No. 9); NOAA Tide Tables
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