sentences:  The Serangoon Harbour lies entirely within Singapore territorial waters, in contrast only a small strip of the Nenas Channel lie within Singapore territorial waters.The depth of Serangoon Harbour is generally deep enough for commercial ships to pass on its way to either the Sembawang Dock in Singapore or Pasir Gudang Johor Port in Malaysia, although the Squance Bank near Pulau Ubin has shallower depths.The islands of Coney Island, Pulau Ketam and Pulau Sekudu lie within this harbour.