The next opening was known as the port of Lido, and separated the island of San Nicolo from Malamocco.
Five miles farther on is the passage of Malamocco, between that island and Pelestrina.

Southwest of Pelestrina lay Brondolo, behind which stood Chioggia, twenty miles distant from Venice.

The southern point of Brondolo was only separated by a small channel--called the Canal of Lombardy--from the mainland.
Unfortunately, at Brondolo the channel had not been closed.

All preparations had been made for doing so, but the work had been postponed until the last moment, in order that trading vessels might enter and leave the harbour, the Chioggians believing that there was sure to be sufficient warning, of the approach of an enemy, to enable them to close the entrance in time.

The sudden appearance of Doria's fleet before Brondolo upset all these calculations, and the Genoese easily carried the position.