Hōshō's Mitsubishi B1M torpedo bomber illustrates how early strike aircraft were designed around a large engine and the ability to carry a torpedo. Its long service reflects reliability at a time when aircraft improvement depended heavily on gradual gains in engine power and power density. The carrier initially used imported Gloster Sparrowhawk fighters before Mitsubishi fielded the 1MF. British designer Herbert Smith, Jack Hyland, and six other engineers moved from the closed Sopwith firm to help Mitsubishi establish its fighter-design capability. The air group therefore reveals that learning to operate a carrier and learning to manufacture suitable aircraft were parts of the same industrial programme.
Notable Point · 38:12-40:03
Hōshō links carrier aviation to engines and industrial transfer
Hōshō's early air group shows Japan combining dependable torpedo aircraft, imported fighters, and British engineering expertise to build a domestic aviation industry.