Ron van Maanen on the Friesland ship Groningen

Ron van Maanen has quite a bit about the Friesland ship Groningen, captured by the English in 1665. He wonders if this is the same ship as the Groenwolt that is mentioned in the Staet van Oorlog te Water for the year 1654. That is my conclusion, at least, as Dr. Weber apparently thought that, at least that is my interpretation of his listing for the Black Spread Eagle (the captured Groningen) in his book about the Four Days' Battle. He has a variety of measurements and quite a few gun lists for different dates. This is based on Ron's list:

The ship Groningen

Date         Length    Beam  Hold     Height between decks
2 March 1654 134ft     34ft  14ft     7-1/2ft
1665         132ft     31ft  14-1/2ft 6-1/2ft
1665         132-1/2ft 32ft  16ft     6ft

Guns   24pdr 18pdr 12pdr 8pdr 6pdr
1665         10    12    18    6
1665    2     6    14    16    2

Sources:

1. H.A. van Foreest and R.E.J. Weber, De Vierdaagse Zeeslag 11-14 Juni 1666, 1984
2. Ron van Maanen, unpublished manuscript "Dutch Warships 1600-1800", undated but circa 1992