Some speculative thinking about names of Enkhuizen Directors' ships

There is a spy message from Thurloe's State Papers, Vol.I, in The First Dutch War, Vol.V, page 185. Many of the Dutch ship names had been translated into English. There are mentions of the Shepperd (Shepherd) and the Shepherdess. They correspond to the Dutch ship names Harder and Harderin. The captain's name given by the Harder is Jan Bonkier, but the name probably should be Jan Backer, who commanded the Harder at the Battle of Scheveningen, and who acted as Vice-Commandeur to Witte de With. The Harderin of Enkhuizen, whose name is listed as "captain Dirick" could be "captain Dircsz" (Dirckszoon). Who that would be is harder to guess.