Chioggia is close to the mainland, at the western extremity of the Venetian archipelago. The name belongs vaguely, in old maps, to the long island properly called Brondolo, on the western end of which is built the town of Brondolo; more particularly to the Port, or entrance between this island and the one called Palestrina, between which two the ‘Lupa,’ the Tower of the She-Wolf, rises out of the water; and especially to the small city of Chioggia. The latter is divided into two parts--the greater Chioggia, built on a
number of very small islets, and the lesser, which stands on the inside shore of the main island. There was a bridge between the two parts.
The entrance to the port of Chioggia being deep and safe, the Venetians had deepened also a natural channel, twenty-five miles long, which led thence through the shallow lagoons to Venice, and this was one of the best and safest approaches to the city from the outer sea, a fact which was well known to the Genoese, who looked upon Chioggia as the real key to the capital, and the name of the place has been given by all historians to the war that followed. It is almost needless to say that the extreme shallowness of the lagoons was a real defence against an enemy not well acquainted with the channels, which, as every one knows, are marked by tall timbers that project from six to fifteen feet above the water. To remove these was a first measure of defence.
The most tremendous exertions were made by the Venetians to prepare themselves for an attack, which would almost certainly have been fatal to them if the Genoese had not put it off too long. Reinforcements were at once sent down to Pietro Emo, the Podestà of Chioggia, who anchored a large armed hulk in the channel, manning it with soldiers and supplying it with provisions to last some time.
The lesser Chioggia, on the shore of the island, was abandoned as not defensible, but the main town was very effectually fortified, and each little islet became a separate stronghold. On the side of the allies Carrara succeeded with great difficulty in conveying a considerable force of men from Padua down the old branch of the Brenta, which the Venetians had obstructed by sinking a hulk across it. Carrara is said to have dug a channel round this point in a single night. The allies had now about twenty-four thousand fighting men.