An Ottoman fleet led by Admiral Piri Reis and Seydi Ali Reis was dispatched from the Ottoman harbour of Suez to eliminate the Portuguese presence from the northwestern part of the Indian Ocean, and especially their fortress at Hormuz Island.

The Ottomans were then able to capture several key positions in the Persian Gulf.

[3] Ultimately, the fleet managed to occupy and control the coasts of Yemen, Aden, and Arabia, as far north as Basra, so as to facilitate their trade with India.

[3] Meanwhile, during the year 1553, Seydi Ali Reis was leading an expedition against the Portuguese into the Indian Ocean, but he was unsuccessful.

[3] Seydi Ali Reis and his galleys would be taken in an ambush (Battle of the Gulf of Oman) by Portuguese forces while he was trying to bring back his fleet from Basra to Suez in August 1554.