 "Middelburg" and "Hellevoetsluis" were optioned by Egypt, but due to financial issues, were instead completed for the Royal Netherlands Navy.Two ships of a modified design were built for the Indonesian Navy which led to the delay of "Vlaardingen" and "Willemstad"s construction.In 2000, three ships ("Alkmaar", "Delfzijl" and "Dordrecht") were withdrawn from service, followed by two more ("Harlingen" and "Scheveningen") in 2003.