At last the wished-for breeze sprang up. The smooth blue expanse became ruffled, and the wind being favourable, the fleet might be speedily expected.

One morning, Bourbon, accompanied by Pescara and Del Vasto, and followed by a troop of two hundred mounted Spanish arquebusiers, was riding from the Castle of Monaco to the camp, when, perceiving several vessels in the distance, he halted to look at them, feeling sure they must be the expected squadron. He was right in the supposition; but his satisfaction was speedily damped, when it became manifest that the ships were being chased by a hostile fleet far their superior in number, and were making all possible sail to place themselves under the protection of the guns of the Castle of Monaco. But it was doubtful whether they could accomplish their object. Clearly they were pursued by Andrea Doria, and in him, as Bourbon and Pescara well knew, they had to deal with one of the most resolute and skilful naval captains of the age.

For a short time, the ships on either side, pursued and pursuers, seemed to maintain their relative distances, being more than half a league apart, and a strong hope was felt by the beholders that the former would escape. But this impression was shaken when it became manifest that the French were gaining upon the fugitives, the still freshening breeze aiding their efforts.

It was with indescribable rage and mortification that Bourbon witnessed this scene. Though he felt that Moncada was unable to cope successfully with a fleet greatly superior to his own in number, and that he therefore acted prudently in avoiding an engagement which might probably result in his own discomfiture, and in the loss of the artillery and stores he was bringing for the Imperial army, Bourbon could not constrain himself, but gave loud utterance to his wrath, and Pescara was scarcely less indignant.

The foremost of the French fleet had now got so much nearer the Spaniards, that deeming they were within range they fired a lew guns at the latter, but the shots fell short, and the discharge was not replied to by the fugitives, who pressed on as swiftly as they could. All the ships were now dashing quickly through the waves, and the chase was watched with the keenest interest, not only by Bourbon and those with him, but by hundreds of spectators collected on the walls of the city, along the harbour, and on the battlements of the castle.

On the towers and ramparts the cannoniers were at their post, match in hand, and with shotted guns, ready to fire upon the French fleet should they venture within range.

The chase had now reached its highest point of excitement, and in a few minutes more the fate of the Spanish fleet must be decided. More guns were fired at them by the foe, but though some of the shots struck, little mischief was done, and the fugitives still held on their way. The French, however, continued to gain upon them, and so critical had become their position, that Bourbon, and almost all the others who looked on, had given them up for lost, when, contrary to all expectation, their escape was ensured by a manouvre of Doria, whose galley, as could be discerned from the broad flag floating at its stern, was foremost in pursuit.

Having come up with the fleet, Doria dashed among them, and turning three galleys out of their course, got between them and Monaco. Feeling sure that these luckless galleys would be captured, Doria directed his attention to the other ships, and poured a broadside into the vessel nearest him. But he failed to disable her, and with her companions she got safe under the castle guns, which were instantly opened upon her pursuer with such effect as to check his further advance. Ere many minutes more the Spanish fleet, which had sustained little damage, entered the harbour amid the shouts and congratulations of the beholders, while the hostile squadron was kept aloof by the guns of the fortress.

Meanwhile, the three galleys intercepted by Doria did their best to escape, and giving up all idea of gaining the harbour, made for the nearest point that could be reached. This was on the farther side of the bay, near Roccabruna, and too far off to be protected by the castle guns. Though closely pursued by the French fleet, the three galleys were here run ashore, and abandoned by their officers and crews.

Bourbon was infuriated at the sight.