No surprises

Because we have basically complete information on Amsterdam and Friesland ships in the First Anglo-Dutch War, I am skeptical about a ship named Eendracht commanded by Albert Claesz de Graeff up to August 1652. While that is possible, given that we have dimensions and gun lists for all other ships built for and hired by the Admiralty of Amsterdam in the period of 1652 to 1653, it seems unlikely. We even have dimensions and gun lists for Jeroen Adelaer's ship Middelburg, captured by the English in June 1652 and Barent Pietersz Dorrevelt's ship that foundered in the storm off the Shetlands in early August. I doubt any possible "mystery ship".