TABLES FOR DETERMINING THE RELATION BETWEEN THE INDICATED HORSE POWER, REVOLUTIONS PER MINUTE AND THE DIAMETER, PITCH AND EFFICIENCY OF SINGLE OR TWIN SCREW PROPELLERS 静止画資料 1899 平賀譲デジタルアーカイブ | 柏図書館
"PRINCESS ROYAL"General Description for Pumping,Flooding and Drawing Arrangement. 静止画資料 1912 平賀譲デジタルアーカイブ | 柏図書館