For the purpose of this directive, Japan is defined to include the four main islands of Japan (Hokkaido, Honshu, Kyushu and Shikoku) and the approximately 1,000 smaller adjacent islands, including the Tsushima Islands and the Ryukyu (Nansei) Islands north of 30° North Latitude (excluding Kuchinoshima Island); and excluding (a) Utsuryo (Ullung) Island, Liancourt Rocks (Take Island) and Quelpart (Saishu or Cheju) Island, (b) the Ryukyu (Nansei) Islands south of 30° North Latitude (including Kuchinoshima Island), the Izu, Nanpo, Bonin (Ogasawara) and Volcano (Kazan or Iwo) Island Groups, and all the other outlying Pacific Islands {including the Daito (Ohigashi or Oagari) Island Group, and Parece Vela (Okinotori), Marcus (Minami-tori) and Ganges (Nakano-tori) Islands}, and (c) the Kurile (Chishima) Islands, the Habomai (Hapomaze) Island Group (including Suisho, Yuri, Akiyuri, Shibotsu and Taraku Islands) and Shikotan Island.