sentences:  Serangoon Harbour
  
  Serangoon Harbour (; ) is a harbour in Singapore located between the mainland island of Singapore (Pulau Ujong) and Pulau Ubin.Before the founding of modern Singapore in 1819, the nearby Pulau Seletar and Pulau Ubin were home to the indigenous Orang Laut and Orang Seletar, who sailed and lived along the Serangoon Harbour, as well as the larger Straits of Johor.