At length, on the morning of the 13th of September, the grand and decisive attack commenced. The ten battering-ships bore down in admirable order to their several stations. The Admiral, in a two-decker, moored about nine hundred yards off the King's Bastion. The other vessels took their places in a masterly manner, the most distant being eleven hundred or twelve hundred yards from the garrison. Under shelter of the walls, furnaces for heating shot had been lighted; and, from the instant the ships dropped into position, a continuous fire of red-hot balls was directed upon them by the garrison.

In little more than ten minutes, continues Drinkwater, the enemy were completely moored, and their cannonade then became tremendous. The showers of shot and shell which were directed from their land-batteries and battering-ships, on the one hand, and, on the other, the incessant fire from the various works of the garrison, exhibited a scene of which neither the pen nor the pencil can furnish a competent idea. It is sufficient to say that upwards of four hundred pieces of the heaviest artillery were playing at the same moment—a power of ordnance which up till that time had scarcely been employed in any siege since the invention of those wonderful engines of destruction.