M.1/30 included speed requirements at 4,000 feet. It placed particular emphasis on carrying 2,000-pound and 1,000-pound bombs. The armament requirements also covered multiple torpedo types. Every part contributing to the aircraft's strength in flight had to be made of metal.
Chapter · 1:07-1:34
M.1/30 bomb loads, torpedoes, and metal construction
M.1/30 paired speed requirements at 4,000 feet with heavy bomb loads, several torpedo types, and metal parts wherever strength in flight depended on them.