Joga Shima (Zyo-ga Shima) (35°08'N., 139°37'E.), a flat trapezoidal shaped island, 30m high, lies about 0.2 mile offshore, and forms the S side of Misaki Ko. A bridge, with a vertical clearance of 22m, spans the channel. A breakwater extends toward the mainland from both the NE and NW ends of the island. A breakwater also extends from the mainland in a SSW direction toward the W breakwater; there is an opening about 100m wide. A detached breakwater extends NW from the NW extremity of Joga Shima.

Location