This report is the result of investigation of existing lighthouses in southern Sakhalin which were built during the Japanese period (1905∼1945). In southern Sakhalin, ten lighthouses including one beacon light were built during the Japanese period. Seven lighthouses were exist, six of them were in operation. These lighthouses are Lopatina (former Kenushi, 1918), Tonin (former Airo, 1935), Aniva (former Nakashiretoko, 1939), Lamanon (former Chirai, 1940), Slepikovsky (former Konotoro, 1943) and beacon light of the Rock of Danger (former Nijyouiwa, 1926). All of them were constructed by reinforced concrete. Moreover, houses for lighthouse keeper built in Japanese period are used now. We hope that these modern heritages for Japan and Russia will be preserved.
