Thus, as in an army, the men-at-arms form by themselves in one quarter to make and meet charges, and the light horse in another quarter to support, pursue, and harass[3] so in a fleet, the captain-general ought to order the strongest and largest ships to form in one quarter to attack, grapple, board and break-up the enemy, and the lesser and weaker ships in another quarter apart, with their artillery and munitions to harass, pursue, and give chase to the enemy if he flies, and to come to the rescue wherever there is most need.

The captain-general should form a detachment of his smaller and lighter vessels, to the extent of one-fourth part of his whole fleet, and order them to take station on either side of the main body.  I mean that they should always keep as a separate body on the flanks of the main body, so that they can see what happens on one side and on the other.

He should admonish and direct every one of the ships that she shall endeavour to grapple with the enemy in such a way that she shall not get between two of them so as to be boarded and engaged on both sides at once.[4]

* * * * *

Having directed and set in order all the aforesaid matters, the captain-general should then marshal the other three-quarters of the fleet that remain in the following manner.

He should consider his position and the direction of the wind, and how to get the advantage of it with his fleet.

Then he should consider the order in which the enemy is formed, whether they come in a close body or in line ahead,[5] and whether they are disposed in square bodies or in a single line,[6] and whether the great ships are in the centre or on the flanks, and in what station is the flagship; and all the other considerations which are essential to the case he should take in hand.

By all means he should do his best that his fleet shall have the weather-gage; for if there was no other advantage he will always keep free from being blinded by the smoke of the guns, so as to be able to see one to another; and for the enemy it will be the contrary, because the smoke and fire of our fleet and of their own will keep driving upon them, and blinding them in such a manner that they will not be able to see one another, and they will fight among themselves from not being able to recognise each other.

Everything being now ready, if the enemy have made squadrons of their fleet we should act in the same manner in ours, placing always the greater ships in one body as a vanguard to grapple first and receive the first shock; and the captain-general should be stationed in the centre squadron, so that he may see those which go before and those which follow.

Each of the squadrons ought to sail in line abreast,[7] so that all can see the enemy and use their guns without getting in each other’s way, and they must not sail in file one behind the other, because thence would come great trouble, as only the leading ships could fight.  In any case a ship is not so nimble as a man to be able to face about and do what is best.[8]