|Location||South of the Tokyo Concession|
|Primary User||Holy Britannian Empire|
|Appears in||Shirley at Gunpoint|
|See Tokyo Concession|
Port Yokosuka (ポート横須賀, Pōto Yokosuka) is a major seaport situated south of the Tokyo Concession. This was the location of the final encounter between the Japan Liberation Front and the Holy Britannian Empire. After Zero's return in 2018, the Black Knights Submarine was kept here for a short period of time, concealed within a tanker.