The July 1654 list in De Jonge's book in Vol.I

I can imagine that there are a number of people outside the Netherlands who are familiar with the July 1654 list of Dutch ships in an appendix to Vol.I of J. C. De Jonge's book, Geschiedenis van het Nederlandsche Zeewezen. There are fewer, still, even in the Netherlands, who have seen and are familiar with the Staet van Oorlog te Water for the year 1654. The new construction ships in this list were either purchases of newly built ships, or ships constructed as part of the first phase of the war building program (30 ships). The list is somewhat misleading, as De Jonge used the dimensions for older Rotterdam ships (the Admiralty of the Maze) in Maas feet (308mm) rather than in Amsterdam feet (283mm). Vreugdenhil's list has the same issue. I only understood what was happening after seeing the dimensions for the Aemilia in Ab Hoving's book about Nicolaes Witsen, and then seeing the 26 February 1652 list of Rotterdam ships. Both Ab Hoving and Jan Glete were aware of this issue, but in the published literature, I have not seen it noted. An odd feature of the Dutch navy in July 1654 is that some of the new, 130ft ships were armed with only 32 guns. Some of the older 128ft ships also received the same armament. I can only imagine that the reason was that either there was a shortage of guns, or that the ships were intended for overseas service, and were thus more seaworthy. Sources:

1. Albert J. Hoving, Nicolaes Witsens Scheeps-Bouw-Konst open gestelt, 1994
2. J. C. De Jonge, Geschiedenis van het Nederlandsche Zeewezen, Vol.I, 1858
3. list of ships of the Admiralty of Rotterdam dated 26 February 1652, 1652
4. Staet van Oorlogh te Water for the year 1654, 1654
5. A. Vreugdenhil, Ships of the United Netherlands 1648-1702, 1938