Dutch Captain: Hendrik Haeckroy

Hendrik Haeckroy served the Admiralty of Amsterdam. He fought in the Battle of Lowestoft in June 1665, where he commanded the frigate Vollenhoven (30 guns). He was assigned to Cornelis Tromp's squadron. In August, he was with De Ruyter's fleet, where he was assigned to De Ruyter's squadron. He still commanded the frigate Vollenhoven (now 28 guns, with a crew of 102 men). He is mentioned on August 29, 1665, along with captains Jan Bronser, Jan Matthijszoon, and Adriaan Teding van Berkhout, in relation to convoying VOC ships and Muscovy traders. Sources:

1. Gerard Brandt, Het Leven en Bedrijif van den Heere Michiel de Ruiter, 1687.
2. Frank Fox, A Distant Storm: the Four Days' Battle of 1666, 1996.