Kammala wannan jumla: A shekara ta 2008 ta yi iyo a
2008 Gasar Cin Kofin Ruwa ta Turai a kan ƙungiyar 4 × 100 m freestyle, wanda kuma ya lashe tagulla a Gasar Cin Kofin Duniya a shekarar da ta gabata. Tare da wannan ƙungiyar ta gama ta huɗu a tseren 4 × 200 m freestyle relay. Da kanta ba ta kai wasan kusa da na karshe ba. A watan da ya biyo baya ta yi gasa a Manchester a Gasar Zakarun Duniya ta 2008 inda ta sake karya bayanan relay guda biyu a tseren 4 × 200 m tare da tawagar da ke Eindhoven. A cikin tseren 4 × 100 m freestyle Hinkelien Schreuder ya maye gurbin Ranomi Kromowidjojo wanda ya ji rauni a gwiwar hannu. Ta lashe lambar yabo ta farko, lambar azurfa, a tseren mita 200 a ranar karshe ta gasar. A lokacin gasar zakarun kasa a watan Yunin 2008, Heemskerk ya saukar da bayanan kasa guda uku a kan dogon hanya, 200 m freestyle, 200 m mutum medley da 100 m baya.