The Battle of Vasai concludes as the Marathas defeat the Portuguese army.

The Battle of Vasai or the Battle of Bassein was fought between the Marathas and the Portuguese rulers of Vasai, a town near Mumbai (Bombay) in the Konkan region of the present-day state of Maharashtra, India. The Marathas were led by Chimaji Appa, a brother of Peshwa Baji Rao I.

The Maratha Empire, also referred to as the Maratha Confederacy, was an early modern polity in the Indian subcontinent. It comprised the realms of the Peshwa and four major independent Maratha states under the nominal leadership of the former.

The Portuguese Empire was a colonial empire that existed between 1415 and 1999. In conjunction with the Spanish Empire, it ushered in the European Age of Discovery. It achieved a global scale, controlling vast portions of the Americas, Africa and various islands in Asia and Oceania. It was one of the most powerful empires of the early modern period, while at its greatest extent in 1820, covering 5.5 million square km, making it among the largest empires in history. Composed of colonies, factories, and later overseas territories, it was the longest-lived colonial empire in history, from the conquest of Ceuta in North Africa in 1415 to the handover of Macau to China in 1999.