I had not remembered how much information there is about the Zeeland jacht Dordrecht. The two sources are the Staet van Oorlog te Water for the year 1654 and two appendices to Vol.I of Geschiedenis van het Nederlandsche Zeewezen:
the jacht Dordrecht
Length: 85ft
Beam: 21ft (est)
Hold: 9.5ft (est)
17 guns:
4 12pdr
7 6pdr
6 3pdr
Crew: 50 men
Similar jachts in 1666 had dimensions of 86ft x 22ft x 9.75ft