John Philip Holland: How a Clare Inventor Helped Make the Submarine Practical

June 15, 2026

Original interpretive illustration of an early submarine at a workshop dock; not an exact reconstruction of Holland VI

On 11 April 1900, the United States Navy bought a submarine. Six months later, on 12 October, it commissioned the vessel as USS Holland. Those two dates mark something more precise, and more interesting, than the invention of underwater travel: a navy had decided that John Philip Holland’s design was worth learning to operate.

Hero illustration: an original interpretation of the subject, not an archival image or exact reconstruction.

The man behind it came from Liscannor in County Clare. His achievement was to help turn a long-explored idea into a workable naval system. Earlier submarines already existed. Holland’s importance lies in how he brought propulsion, diving control and a usable vessel together, then carried that design through years of trials.

A Clare emigrant, a New Jersey workshop

Holland arrived in the United States in 1873. The U.S. Navy’s ship history records that his proposals were rejected in 1875. The boat eventually accepted by the Navy emerged much later, after several experimental designs. A promising principle was not enough: it had to become machinery that worked reliably in water.

Some early support came from Irish-American nationalists. The Fenian Ram, launched in 1881, belonged to that politically charged part of the story. It was a testing ground for Holland’s ideas about underwater navigation, but disagreement with his backers ended the partnership. The Paterson Museum preserves both this boat and his first prototype, allowing the development to be traced through actual objects rather than a single heroic sketch.

That survival matters. An invention usually looks inevitable when only its successful version is remembered. Two earlier hulls tell a different story: a design was something to test, alter and sometimes leave behind.

The submarine had two different power problems

A combustion engine needs oxygen and produces exhaust. That is manageable on the surface; it creates obvious difficulties inside a sealed, submerged vessel. Batteries and an electric motor offered another way to turn the propeller below water.

The operating idea, in three parts

At the surface: a gasoline engine provided propulsion and could recharge the batteries.
Underwater: stored electrical energy drove a motor without requiring combustion air.
During a dive: ballast and control surfaces helped manage buoyancy, depth and the boat’s angle.

This is an explanation of the arrangement, not a claim that Holland individually invented every component.

The Library of Congress account identifies the surface/submerged power combination as a defining feature of the boat the Navy acquired. It was an influential solution, though the little gasoline-powered Holland should not be confused with later diesel-electric or nuclear submarines.

The breakthrough was followed by training

The successful vessel was launched in May 1897. After its purchase and commissioning in 1900, much of its work was deliberately unglamorous: training officers and crews and gathering information for later boats.

At Annapolis, Holland helped the Navy discover what a submarine service would actually require. A surface voyage to Norfolk in January 1901 supplied further performance data. Its career as a commissioned vessel lasted until 1905. The lasting result was larger than the boat itself: people had begun acquiring the skills and evidence needed to operate the craft that followed.

That is a useful way to understand “practical”. A machine becomes practical through testing, manufacture, maintenance and trained operators, as well as through the inventor’s original design.

Across the Atlantic, another Holland

The Royal Navy ordered five Holland-designed submarines, built under licence by Vickers at Barrow-in-Furness. Holland 1, launched in October 1901, survives at the submarine museum in Gosport.

The museum’s account of her early service is a helpful corrective to an effortless-success story. The boat was cramped, difficult on the surface and experimental. An explosion in 1903 injured four men. Adoption did not mean that the technology was already safe, mature or easy to use.

There is also an unmistakable historical irony: a designer once backed by Irish nationalists seeking a weapon against Britain supplied the design chosen for Britain’s first submarine fleet. His engineering travelled through a commercial and political world that no single inventor controlled.

What should Holland be credited with?

John Philip Holland was a major pioneer of the modern submarine and the designer behind the U.S. Navy’s first commissioned submarine. He was not the first human being to build a vessel that travelled underwater. The Navy’s own history of its submarine force begins well before him, with David Bushnell’s Turtle during the American Revolution.

The narrower claim gives his real achievement room to breathe. Holland helped make underwater propulsion and control into a system that navies could adopt, test and develop. For the Clare emigrant, success meant more than getting a boat beneath the surface. It meant persuading others to build a future around it.

Continue with Harry Ferguson’s different challenge: making tractor and implement work as one system, or explore the full Irish inventors and scientists collection of stories.

For family-name history, our Holland surname guide is a separate starting point. Sharing the surname does not establish descent from the inventor. Our Irish heritage gifts offer another way to mark a personal connection to Ireland.