The Second Siege of Diu was a siege of the Portuguese India

Portuguese India

The Portuguese Viceroyalty of India , later the Portuguese State of India , was the aggregate of Portugal's colonial holdings in India.The government started in 1505, six years after the discovery of a sea route to India by Vasco da Gama, with the nomination of the first Viceroy Francisco de...

n city of Diu by the Gujarat Sultanate

Gujarat Sultanate

The Gujarat Sultanate was an independent kingdom established in the early 15th century in Gujarat. The founder of the ruling Muzaffarid dynasty, Zafar Khan was appointed as governor of Gujarat by Nasir-ud-Din Muhammad bin Tughluq IV in 1391, the ruler of the principal state in north India at the...

 in 1546. It ended with a major Portuguese victory.

Background

At the beginning of 1500s, the Muslim Sultanate of Gujarat was the principal seapower in India. Gujarat fought the Portuguese fleets in collaboration with the Mamluk

Mamluk

A Mamluk was a soldier of slave origin, who were predominantly Cumans/Kipchaks The "mamluk phenomenon", as David Ayalon dubbed the creation of the specific warrior...

s. The Portuguese were defeated by a combined Mamluk-Gujarati fleet in 1508, which was in turn destroyed by a Portuguese fleet in the Battle of Diu (1509)

Battle of Diu (1509)

The Battle of Diu sometimes referred as the Second Battle of Chaul was a naval battle fought on 3 February 1509 in the Arabian Sea, near the port of Diu, India, between the Portuguese Empire and a joint fleet of the Sultan of Gujarat, the Mamlûk Burji Sultanate of Egypt, the Zamorin of Kozhikode...

. By 1536, the Portuguese had gained complete control of Diu, while Gujarat was under attack from the Mughals.

In 1538, the Ottomans

Ottoman Empire

The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

, who had taken over Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

 (1517) and Aden

Aden

Aden is a seaport city in Yemen, located by the eastern approach to the Red Sea , some 170 kilometres east of Bab-el-Mandeb. Its population is approximately 800,000. Aden's ancient, natural harbour lies in the crater of an extinct volcano which now forms a peninsula, joined to the mainland by a...

 (1538), joined hands with the Gujarat Sultanate to launch an anti-Portuguese offensive. They besieged Diu in 1538, but had to retreat.

The siege

After the failed siege of 1538, the Gujarati General Khadjar Safar besieged Diu again in an attempt to recapture the island. The siege lasted seven months from 20 April 1546 to 11 November 1546, during which João de Mascarenhas defended Diu.

The siege ended when a Portuguese fleet under Viceroy João de Castro

João de Castro

Dom João de Castro was a Portuguese naval officer and fourth viceroy of Portuguese India. He was called Castro Forte by poet Luís de Camões. Castro was the son of Álvaro de Castro, civil governor of Lisbon...

arrived and routed the attackers.

Khadjar Safar and his son Muharram Rumi Khan (who were probably of Albanian origin) were both killed during the siege.