Jan Fransz Blom in September 1653

The Staet van Oorlog te Water for the year 1654 lists Jan Fransz Blom as the captain of the jacht Haij. I just read a document that mentions him, without naming his ship, on 27 September 1653. He is mentioned, along with captains "Pauwels van den Kerckhove" and "Corstiaen Elderssen". They were all captains of the Admiralty of the Maze (or Rotterdam).