The list of Zeeland ships funded by the resolution at the Peace in 1648

You should not assume that they list of Zeeland convoyers includes the actual ships in service in 1648. There is reason to believe that the actual ships funded by the act of the States Generaal changed over time. My list is the list from early December 1652. By the summer of 1653, the ships included in the 40 convoyers of 1648, the 36 cruisers of 1651, the 50 Directors' ships, and the 100 ships of 1652 had changed radically, due to war losses, ships discarded, ships moved between categories, and new ships hired. You only have to study the lists over time to see the changes.