The affair bore no resemblance to a naval fight, but rather had the appearance of ships attacking walls.

The transports had considerably the advantage in respect of height; and as the Carthaginians had to throw their weapons upward, against a mark which was above them, most of them failed of taking effect; while the weapons thrown from the transports from above fell with increased force, and derived additional impetus from their very weight.

The vessels of observation, and even the lighter kind of barks, which went out through the spaces left under the flooring, which formed a communication between the ships, were at first run down by the mere momentum and bulk of the ships of war; and afterwards they proved a hindrance to the troops appointed to keep the enemy off; for as they mixed with the ships of the enemy, they were frequently under the necessity of withholding their weapons for fear, by a misdirected effort, they should fall on their friends.

At length, beams with iron hooks at their ends, called harpoons, began to be thrown from the Carthaginian upon the Roman ships; and, as they could not cut the harpoons themselves, nor the chains suspended by which they were thrown upon their ships, as each of the ships of war of the enemy, being pulled back, drew with it a transport, connected with it by a harpoon, you might see the fastenings by which the transports were joined together rent asunder, and in another part a series of many vessels dragged away together.

In this manner chiefly were all the bridges of communication torn to pieces, and scarcely had the troops who fought in front time to leap to the second line of ships.