John Philip Holland spent decades developing submarines before the U.S. Navy accepted one of his designs.
Born in Ireland in 1840, Holland later emigrated to the United States and pursued submarine ideas partly in connection with Irish nationalist organizations.
He submitted a design to the U.S. Navy in the 1870s, but the proposal was rejected as impractical.
Holland continued building experimental boats, learning from propulsion, stability, control, and financing problems rather than moving directly to a successful naval vessel.
Holland VI combined a gasoline engine for surface travel with battery-powered electric propulsion underwater.
The boat also used diving planes and carried a torpedo tube, making it much closer to the architecture of later practical submarines than earlier hand-powered submersibles.
The U.S. Navy purchased Holland VI in April 1900 and commissioned it as Holland, Submarine No. 1, on October 12, 1900.
The Navy then ordered additional boats influenced by the design, while other navies also acquired Holland-related submarines through licensed companies.
The gasoline-electric arrangement still had serious safety limitations and was later replaced by diesel-electric systems.
For TransitSatellite, Holland’s importance lies in system integration and repeatable naval operation rather than the false claim that he invented the first submarine.