What was the purpose of the Boston Port Act?

The Boston Port Act or Trade Act (one of the Intolerable Acts of 1774) was designed to punish the Massachusetts colony for its protests of British taxes, most notably with the Boston Tea Party of 1773. The act closed the port of Boston through a blockade by the Royal Navy. This was an attempt to coerce the repayment of customs and restitution to the East India Company for their lost revenue, and to re-exert British control of the colonies.