The claim that Japanese torpedo boats were simple German copies overlooks how imported designs change in production. A borrowed design still has to fit local fabrication techniques, materials, and operational requirements, so the resulting craft can become a distinct national solution. Japan looked toward the German Schnellboot while seeking an answer to American PT boats, but its wartime reputation did not make it the best industrial fit. British Fairmile D motor gunboats, with their wooden construction, may have suited Japanese production capabilities better. Technology transfer was not a drop-in process, and design ancestry alone cannot explain the finished craft.
Notable Point · 3:11-7:30
Why Japanese boats were not simple German copies
A foreign design lineage did not make Japanese torpedo boats straightforward German copies, because local materials, skills, and missions reshaped what could actually be built.