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Coordinates: 20°N 71°E / 20°N 71°E / 20; 71

Siege of Diu
Ottoman fleet in the Indian Ocean in the 16th century.
Conflict: Turkish–Portuguese War (1509)
Date: September, 1538
Place: Diu, India
Outcome: Ottoman retreat.
Flag Portugal (1495).svgPortuguese Empire Ottoman Navy1453-1789.svg Ottoman Empire
António Silveira

Martim Afonso de Sousa

Suleiman Pasha Governor of Egypt
72 ships.[1]
130 cannons.
Unknown Unknown
Aden cannon of Suleiman Pasha, founded by Mohammed ibn Hamza in 1530-31 for an Ottoman invasion of India. Taken in the capture of Aden in 1839 by Cap. H. Smith of HMS Volage. Tower of London.
The Diu Fort was built by the Portuguese in 1535.

The Siege of Diu occurred when an Ottoman imperial fleet attempted to capture the Indian city of Diu in 1538, then held by the Portuguese.


In the Indian Ocean, Süleyman Pasha, Governor of Egypt, led several naval campaigns against the Portuguese in an attempt to remove them and reestablish trade with India. In 1509, the major Battle of Diu (1509) took place between the Ottoman and Portuguese fleets. Since 1517, the Ottomans had attempted to combine forces with Gujarat in order to fight the Portuguese away from the Red Sea and in the area of India.[2] Pro-Ottoman forces under Captain Hoca Sefer had been installed by Selman Reis in Diu.[2]

Diu in Gujerat, was with Surat, one of the main points of supply of spices to Ottoman Egypt at that time. However, Portuguese intervention thwarted that trade by controlling the traffic in the Red Sea.[2] In 1530, the Venetians could not obtain any supply of spices through Egypt.[2]

The Ottomans under the Governor of Yemen Mustafa, fought the Portuguese at Aden (1530-31), and sent a fleet to Diu in Gujerat in order to repel a Portuguese siege of the city under Nuno da Cunha. The Portuguese retreated in February 1531.[2] Soon after however, the Sultan of Gujerat Bahadur Shah, who was under threat from the Mughal emperor Humayun made an agreement with the Portuguese, who took the opportunity to build a strong fort in front of Diu.[2] The Portuguese seized the stronghold of Gogala (Bender-i Türk) near the city,[2] and built the Diu Fort. Bahadur Shah again appealed to the Ottomans to expel the Portuguese, leading to the 1538 expedition.[2]

1538 expedition

The Ottoman governor of Egypt since 1525, Süleyman Pasha, obtained an agreement from Istanbul to launch an attack against the Portuguese.[2] A fleet of 80 ships, including 17 galleys and 2 galleons, was prepared, and the building of a canal was started between the Nile and Suez in 1531-1532.[2] There were delays however due to the Siege of Coron in the Mediterranean, and the Ottoman-Safavid war of 1533-1535.[2] Meanwhile, the Portuguese continued their progression, and killed Bahadur Shah in February 1537.[2]

Aden in Yemen was captured by the Ottomans under Süleyman Pasha in 1538, in order to provide an Ottoman base for raids against Portuguese possessions on the western coast of India.[2][3] The Sultan of Aden, Sheikh Amir bin Dawaud, an ally of the Portuguese, was hanged when he was invited on the Ottoman ships, and the city was captured without a siege.[2]

The Ottoman fleet left Aden on 19 August 1538 and arrived at Diu on 4 September 1538.[2] It was the largest Ottoman fleet ever sent into the Indian Ocean.[4] The Ottoman fleet laid siege to Diu with 130 cannons and bombarded the city.[2] Soon however, news were received of the arrival of a strong Portuguese relief fleet. At the same time, it seems that the new ruler of Gujerat was weary of Ottoman control, and did not support them adequately during the siege.[2] The Ottomans finally had to lift the siege.[2]

Map of Diu, 1729.

After the failed siege, the Ottomans returned to Aden, where they fortified the city with 100 pieces of artillery.[3][5] On of them is still visible today at the Tower of London, following the capture of Aden by British forces in 1839.[6] Süleyman Pasha also established Ottoman suzerainty over Shihr and Zabid, and reorganized the territories of Yemen and Aden as an Ottoman province, or Beylerbeylik.[2]

Süleyman Pasha intended to launch a second expedition against the Portuguese in Diu, but this did not happen.[2] In 1540, the Portuguese sent a retaliatory expedition to the Red Sea, attacking Suakin and Kusayr, and attempted to take Suez with a fleet of 72 ships in 1541.[2][7] In 1546, the Ottoman established a new naval base in Basra, thus threatening the Portuguese in Hormuz.[2] The Ottomans would suffer a strong naval defeat against in the Persian Gulf in 1554.[2] Further conflict between the Ottomans and the Portuguese would lead to the Ottoman expedition to Aceh in 1565.

The Indians would not retake possession of the Diu enclave until Operation Vijay in 1961.[8]


  1. ^ European warfare, 1494-1660 Jeremy Black p.60 [1]
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w An economic and social history of the Ottoman Empire by Halil İnalcik p.324ff [2]
  3. ^ a b The history of Aden, 1839-72 by Zaka Hanna Kour p.2 [3]
  4. ^ European warfare, 1494-1660 Jeremy Black p.60 [4]
  5. ^ An economic and social history of the Ottoman Empire by Halil İnalcik p.326 [5]
  6. ^ Tower of London exhibit
  7. ^ Mecca: a literary history of the Muslim Holy Land by Francis E. Peters p.405 [6]
  8. ^ McGregor, Andrew James A military history of modern Egypt: from the Ottoman Conquest to the Ramadan War; p. 30 [7]


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