This is more information transcribed from the "Staet van Oorlogh te Water voor den Jaere 1654", from July 1654. I have not seen this information in published form. Vreugdenhil only published the dimensions, not the armament details or names of captains. Since all Rotterdam ships are said have dimensions in Maas feet (308mm), I have done the conversion to Amsterdam feet (283mm), as well.
| Admiralty: | Amsterdam |
| Ship: | Groningen |
| Date built: | 1641 |
| Captain: | Gillis Tijssen Campen |
| Guns: | 34 |
| Length: | 128 feet |
| Beam: | 31-1/2 feet |
| Hold: | 12 feet |
| Brass Guns: | 4-10pdr, 2-12pdr, 4-8pdr, and 4-4pdr |
| Iron Guns: | 16-12pdr, and 4-8pdr |
| Admiralty: | Rotterdam |
| Ship: | Gulden Dolphijn |
| Date built: | 1634 |
| Captain: | Paulus van den Kerckhoff |
| Guns: | 32 |
| Length: | 116 ft (Maas), 126-1/2 ft (Amsterdam) |
| Beam: | 25 ft (Maas), 27-1/4 ft (Amsterdam) |
| Hold: | 12 ft (Maas), 13 ft (Amsterdam) /td> |
| Brass Guns: | 4-chambered 24pdr, 2-chambered 5pdr |
| Iron Guns: | 16-12pdr, 8-6pdr, and 2-4pdr |
