The North Sea Canal or Noordzeekanaal is a Dutch ship canal from Amsterdam to the North Sea at IJmuiden, constructed between 1865 and 1876 to enable seafaring vessels to reach the port of Amsterdam. It ends at Amsterdam in the closed-off IJ bay, which in turn connects to the Amsterdam-Rhine Canal.
Together there are the following connections:
Railroad tunnels (with nearest train station on the south and north bank):
Road tunnels, from east to west:
Several ferries. In Amsterdam there are several across the IJ; at least one is frequent, operating 24 hours a day, free of charge.
There are four locks, of various sizes at the North Sea mouth of the canal.

between Amsterdam Sloterdijk and Zaandam
between Driehuis and Beverwijk
Zeeburger Tunnel and Zeeburger Bridge
Zuiderzeeweg
IJ Tunnel
Coen Tunnel
Wijker Tunnel (part of the A9 motorway)
Velser Tunnel