Jan Duijm in the Three Days Battle (Portland)

I had originally assumed that the Jan Duijm, whose ship towed Michiel De Ruyter's ship for most of the Three Days Battle was actually Jacob Duijm, captain of the Enkhuizen Directors' ship Vergulde Zon. However, I became persuaded that this was really the Zeeland naval officer Jan Duijm, and that he must have commanded some "mystery" Zeeland ship in the battle. After studying the list of 17 Zeeland ships that survived the battle and which sailed to Vlissingen together I think that either my original assumption was, in fact, correct, or that Jan Duijm was lieutenant of a Zeeland ship whose captain was either absent or who had been killed in the battle.