On the Navy-Boards (23)

And each brigade-commander[*] must divide into three parts whatever area his tribe has taken over, and the ships in the same way, and then he must allot the thirds of his tribe in such a way that of the whole space of the dockyards each tribe may have one area and each third of a tribe a third of an area; so that you can know at once, if necessary, where each tribe and each third of a tribe is stationed, who are the trierarchs and what ships they have, and that so each tribe may have thirty ships and each third of a tribe ten. For if we can only get this started, any detail at present omitted (for it is perhaps difficult to provide for everything) will be discovered by the actual working of the plan, and we shall have a uniform system both for the whole navy and for every part of it.