The North Sea Canal connects the North Sea with the IJ Bay in Amsterdam.
IJmuiden (Dutch pronunciation: [ˌɛi̯ˈmœy̯də(n)], approx. ei mouden) is a port city in the Dutch province of North Holland, and it is the main town of the municipality of Velsen. It is located at the mouth of the North Sea Canal to Amsterdam, and lies approximately 17 kilometres (11 mi) north of Haarlem.
The internal capitalization in the spelling is because IJ is a digraph in Dutch, possibly a ligature, and sometimes considered a single letter.