Location of Yokohama

Yokohama (Japanese: 横浜市, Yokohama-shi) is a city in the Asian Prosperity Sphere in the former nation-state known as Japan, and is the largest seaport in that region.

On 10 June 2146, the submarine base located in the city was attacked by jury-rigged mining and transport craft from Oceanis, crippling the underwater fleets docked there. On the same day, the submarine base at Le Havre was also targeted. These attacks directly led to inter-Combine peace talks aimed at addressing the struggle for independence by the united sea floor communities.