On December 16, 1773, American colonists in Boston boarded three British East India Company ships — the Dartmouth, Eleanor, and Beaver — and dumped 342 chests of tea into Boston Harbor. The action protested the Tea Act of 1773, which granted the East India Company a monopoly on tea sales in the colonies while maintaining the Townshend duty. Organized by the Sons of Liberty, the destruction of approximately 92,000 pounds of tea prompted Parliament to pass the Coercive Acts of 1774.