A binnenjacht, the Maecht

From the Collection Johan de Witt, I had seen a copy of a document of Zeeland ships from early 1652 that mentioned two binnenjachten: yachts for the inland waters of Zeeland. One of these was the Maecht, commanded by Jan Janssen van der Putte. Ron van Maanen has no coverage of such vessels in his papers. I just saw a document, dating from June 1653, following the Battle of the Gabbard or Nieuwpoort, that mentions the binnenjacht Maecht and kapitein van der Putte. The jacht was apparently still in service. That is why I would be very interested to know that specifications of the binnenjachten.