At the end of World War II, two completed Type 4 Chi-To tanks were dumped into Lake Hamana in Shizuoka Prefecture to avoid capture by Allied occupation forces.
Setelah Perang Dunia II berakhir, 2 buah tank Tipe 4 Chi-To dibuang ke Danau Hamana di Prefektur Shizuoka agar tidak jatuh ke Tangan Sekutu.