Some information from 1638 or so

Dr. M.G. De Boer's book Het Proefjaar van Maarten Harpertsz. Tromp 1637-1639 (1946) has some pieces of information that might be useful. For example, the ship Zeekalf, Breda, Gideon, the jacht Bommel, and the Engel Gabriël were deemed to be not very useful, and they needed to be replaced. From another book, that by Dr. F. Graefe, De Kapiteinsjaren van Maerten Harpertszoon Tromp (1938) some details about those ships:

• Zeelkalf, Admiraliteit van Rotterdam, built in 1622, 200 lasts, 4 brass and 24 iron guns, crew of 90 sailors and 20 soldiers, commanded by Sijbert Vijgh
• Breda, Admiraliteit van Friesland, 24 guns, crew of 80 sailors and 20 soldiers, commanded by Hendrick Janszoon Camp
• Gideon, Admiraliteit van Friesland, 96 lasts, 22 guns, crew 50 sailors and 20 soldiers, commanded by Tjaart Rijenx de Groot
• jacht Bommel, Admiraliteit van Amsterdam, 10 guns, crew 60, commanded by Barent Pieterszoon Dorrevelt
• Engel Gabriël, Admiraliteit van Amsterdam, 16 guns, crew 50 sailors and 16 soldiers, commanded by Gerrit Veen