Hearing that the Turkish fleet was approaching, Sylveira sent immediate notice of it to Nuno de Cuna, who prepared with great diligence to go in person to relieve Diu. Michael Vaz was sent to sea by Sylveira to look out for the enemy, and falling in with their fleet came so near on purpose to examine their force that several of their shot reached his vessel. He got off however, and carried the news to the governor of Goa. The Turkish fleet came at length to anchor in the port of Diu, where it was formidable not only to the small Portuguese garrison in the fort, but to the Moors even who had long expected their arrival. Next day Solyman landed 600 well armed janizaries, who immediately entered the city and behaved with much insolence. Drawing near the fort, they killed six Portuguese; but 300 musqueteers attacked them from the fort and drove them away with the loss of fifty men. In consequence of a storm, Solyman was obliged to remove his fleet to _Madrefavat_, as a safer harbour, where he remained twenty days, during which time Sylveira was diligently occupied in strengthening the fortifications of the castle, planting his artillery on the ramparts, and assigning every one his proper post for the ensuing siege. At the same time, the Turks assisted by Zofar commenced operations against the fort, by constructing batteries, and endeavouring to ruin the defences of a bulwark at the entrance of the harbour, which they battered with their cannon. With this view likewise, they built a wooden castle on a large bark, which, they filled with combustibles, meaning to send it against the bulwark to set it on fire. But Francisco de Gouvea, who commanded the small naval force then at Diu, went against this floating castle under night, and contrived to destroy it by fire. At this time likewise some relief was sent to the fort by Nuno de Cuna, and the garrison was much elated by the assurance of his intention of coming speedily in person to raise the siege.