Okinotori island facilities
Okinotori island is a secondary supply base used by Chihaya Gunzou.
Okinotori island facilities contain a supply of preserved food to be used by the humans and there is a hull of a sunk "Fleet of Fog" warship, presumably of a battleship tonnage (possibly Hyuuga), in the waters nearby, which Iona can cannibalize for useful nano-materials.