The craft sent by António da Silveira arrived in Goa in mid September, but already governor Nuno da Cunha was well aware of the presence of the Turks in India: the Portuguese had intercepted a Turkish galleon in southern India and another galley that got separated from the fleet and called at Honavar, which the Portuguese destroyed with the aid of the locals (a fight in which Fernão Mendes Pinto participated).
The governor had assembled a relief force of 14 galleons 8 galleys, several caravels and over 30 smaller oar ships, but in September 14 the new viceroy appointed by Lisbon arrived, and demanded the immediate succession in office.

By the end of 1537, reports on Ottoman preparations in Egypt had reached Lisbon through Venice, and King John III promptly ordered a reinforcement of 11 naus and 3,000 soldiers, of which 800 were fidalgos, to be dispatched to India as soon as possible along with the new viceroy, Dom Garcia de Noronha.
At Goa however, Dom Garcia considered the relief force organized by governor Nuno da Cunha to be insufficient, though the Portuguese veterans in India argued otherwise.
The viceroy remained in Goa for two more months, organizing his forces until he had gathered an imposing fleet, which according to João de Barros numbered 170 sail and 4500 Portuguese soldiers, and according to a detailed report by Francisco de Andrade, was composed of 152 vessels, which included 9 heavy carracks, 14 galleons, 13 small carracks, 8 war-caravels, 5 latin caravels, 1 bastard galley, 13 royal galleys, 15 galleots, 11 Mediterranean brigantines, 2 albetoças, 18 light galleys and 44 light vessels and oarcraft, bearing 5000 Portuguese soldiers, 3000 Indian auxiliaries, 1500 Portuguese sailors, uncounted number of native sailors, oarsmen and combat slaves and a little under 400 heavy cannon and 600 light cannon.
 Just as the expedition was about to set sail to Diu however, a craft arrived in Goa with the information that the siege had been lifted.
The craft sent by António da Silveira arrived in Goa in mid September, but already governor Nuno da Cunha was well aware of the presence of the Turks in India: the Portuguese had intercepted a Turkish galleon in southern India and another galley that got separated from the fleet and called at Honavar, which the Portuguese destroyed with the aid of the locals (a fight in which Fernão Mendes Pinto participated). The governor had assembled a relief force of 14 galleons 8 galleys, several caravels and over 30 smaller oar ships, but in September 14 the new viceroy appointed by Lisbon arrived, and demanded the immediate succession in office.
By the end of 1537, reports on Ottoman preparations in Egypt had reached Lisbon through Venice, and King John III promptly ordered a reinforcement of 11 naus and 3,000 soldiers, of which 800 were fidalgos, to be dispatched to India as soon as possible along with the new viceroy, Dom Garcia de Noronha. At Goa however, Dom Garcia considered the relief force organized by governor Nuno da Cunha to be insufficient, though the Portuguese veterans in India argued otherwise. The viceroy remained in Goa for two more months, organizing his forces until he had gathered an imposing fleet, which according to João de Barros numbered 170 sail and 4500 Portuguese soldiers, and according to a detailed report by Francisco de Andrade, was composed of 152 vessels, which included 9 heavy carracks, 14 galleons, 13 small carracks, 8 war-caravels, 5 latin caravels, 1 bastard galley, 13 royal galleys, 15 galleots, 11 Mediterranean brigantines, 2 albetoças, 18 light galleys and 44 light vessels and oarcraft, bearing 5000 Portuguese soldiers, 3000 Indian auxiliaries, 1500 Portuguese sailors, uncounted number of native sailors, oarsmen and combat slaves and a little under 400 heavy cannon and 600 light cannon.  Just as the expedition was about to set sail to Diu however, a craft arrived in Goa with the information that the siege had been lifted.
Siege of Diu