Floating on the back of a massive cargo ship, three Super Post Panamax cranes are due to arrive at the Port of Seattle.
The cranes have traveled through the Salish Sea into Elliott Bay for several days, and were parked off Magnolia all Monday.
The cranes will operate at Terminal 18 on Harbor Island.
They will load some of the largest container ships in the world, known as Super Panamax vessels that are too large to fit through the Panama Canal.
Seattle's first three Super Post Panamax cranes were installed at the port back at the end of last year.