Chart Navigation & Plotting · Tides
Spring tides, with the greatest range, occur:
- AAt first and last quarter moon
- BAt new and full moon✓ Correct
- COnly in the spring season
- DAt the moon's apogee
Explanation
Spring tides occur near new and full moon, when the sun and moon align and their tide-raising forces combine, producing the largest range. Neap tides (smallest range) occur at the quarters.
Authority: NOAA Tide Tables; Bowditch (Pub. 9)
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