A theory

We know that in the summer and fall of 1652, Jacob Claesz. Boot commanded a Monnikendam Directors' ship of unknown name. We also know from at least two sources that a Monnikendam Directors' ship was taken by the English at the Battle of the Gabbard in June 1653. Dr. Elias says that the ship was the Halve Maan, which the English took into service as a warship after capturing it. The list of ships at Vlissingen in early July 1653 shows that the only Monnikendam Directors' ship at the battle was taken. I believe that the source quoted by Dr. Elias had misidentified the Directors as being from Edam. My theory is that a different captain commanded the ship in the Battle of the Gabbard, and that it was the same ship commanded by Jacob Claesz. Boot in 1652. That would mean that we can guess that his ship was the Halve Maan. We also know the English dimensions, so we can guess at the Dutch dimensions.