From the notes of Ron van Maanen, Cornelis van Velsen's ship Gelderland

Cornelis van Velsen commanded the ship Gelderland during the First Anglo-Dutch War up to the Battle of the Gabbard, when the ship was lost in action due to a gunpowder explosion. Ron van Maanen's notes have the information about the ship:

The ship Gelderland, Capt. Cornelis van Velsen
Length from stem to sternpost:  112ft
Beam:                            28ft
Hold:                            11ft
Height above hold:                6-1/2ft
28 guns:
16-10pdr
10-6pdr
2-3pdr

Crew:  100 men

Sources:

1. Johan E. Elias, Schetsen uit de geschiedenis van ons zeewezen, Vol.V, 1928
2. Dr. S.R. Gardiner, Ed., The First Dutch War, Vol.II, 1900
3. Ron van Maanen, unpublished manuscript "Dutch Warships 1600-1800", undated, but circa 1992