Yes, I'm pretty sure that in many cases the combined fleets of many nations on paper were quite large. However these nations were spread out over the entire globe, as was their fleets. The French at the battle of the Nile had 13 ships of the line and a number of frigates. At Trafalgar, the combined French-Spanish fleet had about 33 ships total (I'm pretty sure about that, I might have to double check it).