Size can matter (see below, a case of we only budgeted for six but as the Carling beer advert says it all, probably the best in the world - normal frigate [RN/French/Spanish] in the background):
The master plan being that with the Master and Commander starter set and WI giveaway I have six brigs and four frigates, plus the USS Constitution ("old ironsides" herself - good timbers apparently). That means a basic USN fleet of two brigs and USS Constitution, a RN fleet of two brigs and a normal frigate and two brigs and a frigate for the French! Leaving two frigates in excess, whether to reinforce the French or British fleets, or make a Spaniard is the question (perhaps a wandering Russian frigate?). The only "possibly needed" expansion would be to include the bizarre fleets of the Barbary Pirates of the Mediterranean (where the teething battles of the USN were fought on the shores of Tripoli, as per the US Marines song) or the addition of a lazy fat merchantman or two. A small self-contained project, what could go possibly wrong, provided it gets off the painting tray.