the first ship lock in the world with doors of concrete
Waterlock doors are traditionally made of wood or steel. The advantage of concrete is the construction and lower maintenance costs. The doors are 10 inches thick over 6 meters long and weigh about 14 tons each.
The new dam will be operated remotely. The water recreants can push a button to indicate that he or she wants to pass the lock. From the port of IJburg lock keepers open the gates.