The Sloterdijk was a Prefabricated boat. A Prefabricated boat was taken as a kit on a large ship. The Sloterdijk was a small war yacht and sent to China.
Putman's surprise attack
On July 7, 1633, Putmans' squadron entered the mouth of the Chincheu River. There was part of Admiral Zheng Zhilong's newly built fleet for repairs and supplies. Part of this fleet consisted of new ships named Ouboy by Putmans. They were hybrid Chinese junks built in a European manner, armed with (European) heavy cannons. (Dagregister). The Chinese ships partly on the dry land were unmanned and were quickly destroyed.
Putmans maintained the blockade from July to October. He believed that the Chinese naval combat power had been broken. Zheng Zhilong's fleet was partly destroyed but not completely. Putman's base of operations was the Liaoluo Bay behind the islet of Kinmen. His squadron consisted of the yachts: Broekershaven, Sloterdijk, Wieringen, Bredamme, Zeeburg, Koudekerke, Zalm and Bleiswijk.
Battle of Liaoluo Bay
Early in the morning on October 22, 50 large and 100 smaller junks filled with combustible material came into view. Putman's squadron was anchored in Liao lo Wan bay south of Kinmen Island. His allied Chinese pirates about 40 junks immediately lifted the anchor and took off.
The Dutch lay there, relying on their artillery. The Chinese, on the other hand, had no intention of letting it come to an artillery fight and were on a collision course. Putmans realized too late that each and every one of them were fireships approaching him. The Chinese boarded and once attached to a Dutch ship, they set fire to their own ships with real contempt for death. The Broekerhaven and Sloterdijk were lost. Putman had to give up the blockade and retreat to Tayuan.
The VOC then gave up its efforts to gain a foothold on the Chinese mainland. In the coming decades Fort Zeelandia on Tayoean became the VOC hub in the Far East.
- De dagregisters van het kasteel Zeelandia, Taiwan 1629-1662 p. 137.