"Nagato"&"Mutsu" Specification for Testing Watertight Compartments,Etc. Oct.10th,1917. StillImage 1917 Yuzuru Hiraga Digital Archive | Kashiwa Library
B.S."NAGATO" CURVES OF BENDING AND SHEARING STRESSES. StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library
B.S."NAGATO" RESULTS OF CALCULATION OF BENDING AND SHEARING STRESSES. StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library
第四号戦艦「フレーム」自百拾番 至百二拾番間ミッドル甲板下(左舷)石炭庫水圧試験成績表 (大正三年六月九日施行)〔戦艦山城〕 StillImage 1914 Yuzuru Hiraga Digital Archive | Kashiwa Library
第四号戦艦「フレーム」自百拾番 至百二拾番間ミッドル甲板下(左舷)石炭庫水圧試験デフレクション之図〔戦艦山城〕 StillImage Yuzuru Hiraga Digital Archive | Kashiwa Library