The submarine was envisioned by ancients who would sail the seas in ships of their time and dream of a weapon that could ply the deep. This undersea vessel could attack and sink opposing ships from below, taking them completely by surprise and remaining largely impervious to their attacks. But technology had a long way to go to make anything like a practical submarine possible.
It was not until the 17th century that anything could be constructed, and the technology still struggled to solve the issues with sealing a hull against pressure, propulsion, weapons, buoyancy, and crew survival. Wars had come and gone, and sea power was all about what floated on the surface. The designers still sought to find the weapons platform that would work.
The ideas to use the submarine as a vehicle of exploration and adventure were about, but the drive to create a working military application was what drove the development of the modern submarine. Modern military submarines are always on patrol somewhere. The saying now is that there are only two kinds of ships in the navy: submarines and targets.
The word submarine is generally applied to the larger, independently operated military vessels. But the smaller "submarine" called a submersible is currently operated from support vessels. Military technology, at least a part of it, has been adapted to smaller vessels for research and exploration. And we've come a long way with the contemporary unmanned submersible, too. They can be launched from support vessels and can operate a tremendous depths and under adverse conditions without directly risking lives.
Submarine Products was created in 1959.
Captain Submarine was created in 1972.
Submarine - book - was created in 1993.
Submarine Attack was created in 1954.
Brown Submarine was created in 2008.
The Submarine Caper was created in 1981.
Submarine Voyage was created in 1959.
Submarine Bells was created in 1990.
Submarine Command was created in 1951-11.
Submarine Patrol was created on 1938-11-25.
Ukrainian submarine Zaporizhzhia was created in 1970.
Russian submarine Severodvinsk was created in 2012.