Gorcum/Gorinchem Here is more from the 1654 list. Dimensions in Maas feet: Length: 106 feet Beam: 25 feet Hold: 9-1/2 feet 30 guns: Brass 2-light 15pdr 6-light 5pdr 6-6pdr Iron 12-12pdr 4-6pdr Dimensions in Amsterdam feet: Length: 116 feet Beam: 27 feet Hold: 11 feet Again, these are from the Weber and Van Foreest book about the Four Days Battle. As usual, due to measuring differences, there is not a constant mapping between the dimensions in Maas feet and Amsterdam feet.