Sea-going Torpedo Boat for the Imperial Japanese Navy Curves of Computation StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library
Torpedo Boat for the Japanese Government Deck Plan StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library
MOMOGRAM FOR DE MARRES FORMULA.〔防禦甲板関係算定結果〕 StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library
〔UNITED STATES NAVAL INSTITUTE PROCEEDINGSからの抜粋 1930年5月〕 StillImage 1930 Yuzuru Hiraga Digital Archive | Kashiwa Library
〔弾軸と板となす角度の関係メモ・裏面は平賀宛領収書:東京帝国大学工学部応用工学科山口美親発行〕/他 StillImage 1928 Yuzuru Hiraga Digital Archive | Kashiwa Library