A second pilot jumps onto the Orion for the final section in shallower water into Tokyo Cruise Terminal. Yokohama has an enormous amount of container and bulk goods shipping. Tokyo looms with its high rise and densely packed buildings. We pass a bridge that goes to an island, that we later learn is the start of an undersea tunnel built to allow passing water traffic. With an overall length of 23.7 km, it includes a 4.4 km bridge and 9.6 km tunnel underneath the bay—the fourth-longest underwater tunnel in the world. It is called the Tokyo Bay Aqua-Line.Read more