The Maritime Museum is located in the Minato Mirai, and is dedicated to the maritime history of Japan. It was opened in 1993. The main exhibit of the museum - maritime training sailboat Nippon Maru, which was launched in 1930 and is now located at the foot of the tower Landmark Tower.

The museum owns the biggest shipping company NYK Line, whose history dates back to the 1870s. Its current fleet comprises 776 vessels with offices opened in 27 countries around the world, including in Russia. The company is part of Mitsubishi Group.

The museum tells the history of Yokohama as one of the ports of Japan, which in the XIX century were open to international trade. It is believed that the opening of Japan to the rest of the world was largely due Commander Matthew Perry, policy and officer of the Naval Forces of the USA. In 1852-1854 years he has successfully held two diplomatic missions, which resulted in the United States and Japan signed the Convention of Kanagawa by loosening the self-isolation of the rising sun. Expeditions Perry were the fourth and fifth US attempts to establish trade and diplomatic relations. Perry had been ordered to use force if Japan refuses to negotiate. His ships fired into the air and let out black smoke, so the Japanese squadron nicknamed "black".

The museum tells about how the developed world and the Japanese shipbuilding industry since the mid XIX century, of modern technologies in the industry and the importance of the port of Yokohama. Here are a large collection of models of modern and vintage ships, a collection of books about shipbuilding.

Sailboat Nippon Maru - four-masted ship of 300 feet. Over the years passed, according to estimates, 1, 8 million. Kilometers and as a training vessel for naval service has prepared about 11, 5 thousand people. It was launched in January 1930. After World War II it was used for the repatriation of people from the former colonies of Japan. In 1984 Nippon Maru completed service and was moored at the foot of the Tower Landmark.