Launching the USS Holland -- my big regret is that I couldn't work in a reference to the dynamite gun

Perhaps even more than the airplane, submarines are the perfect example of how a wave of enabling technologies at the end of the 19th century suddenly made the long dreamed of both possible and practical. Experiments in the field went back literally hundreds of years.

But it wasn't until the last third of the 19th century that a set of four advances – – one revolutionary in the field of naval warfare, the other three revolutionary period – – would make submarines a major military factor. Whitehead torpedoes, Bessemer steel, electric batteries and motors, and internal combustion made the modern version of the craft possible.

The models being developed by most of the major powers around 1900 were, in broad strokes, the same basic configuration as those that would patrol the oceans for more than 50 years until the launch of the Nautilus. There would, of course, be great progress. The subs of World War I would be far more sophisticated than those of 15 years earlier, just as the subs of World War II would surpass those of the previous generation, but the underlying approach would remain fundamentally the same.

The following article, complete with very cool illustrations, comes from Scientific American (December 28, 1901). Just to give you an idea how quickly things were moving at the time, the same issue has two news items on major advances in wireless telegraphy including Marconi's announcement of the first successful transatlantic radio transmission, accepted as authentic by "Mr. Edison" and prompting a cable of congratulations from "Prof. Bell" who graciously offered his house on the coast of Nova Scotia as a site for future experiments.