News of the Boston Tea Party had…
March 1774 CE
News of the Boston Tea Party had reached England in January 1774.
Parliament responds with a series of acts that are intended to punish Boston for this illegal destruction of private property, restore British authority in Massachusetts, and otherwise reform colonial government in America.
The Boston Port Act, passed into law by Parliament on March 30, 1774, as one of the measures (variously called the Intolerable Acts, the Punitive Acts or the Coercive Acts) designed to secure Great Britain's jurisdictions over her American dominions, outlaws the use of the Port of Boston (by setting up a barricade/blockade) for "landing and discharging, loading or shipping, of goods, wares, and merchandise" until such time as restitution was made to the King's treasury (for customs duty lost) and to the East India Company for damages suffered.
In other words, it closes Boston Port to all ships, no matter what business the ship has.