 William proceeded the following morning to attack the Forts of Sainte Marie and Isabelle, the latter built on the levee of Voorderweert.He also ordered the dykes of the Polder of Melsele to be demolished with the aim of flooding the area, but the low tide prevented this.Over the next four days, the Dutch sappers worked to improve the defenses of the main Fort of Liefkenshoek.