Chinese online retail giant Alibaba CEO Jack Ma (C) waves as he arrives at the New York Stock Exchange in New York on September 19, 2014. Alibaba is poised for a record-breaking stock market debut on September 19, with shares priced at $68 in a public offering that could be valued at $25 billion. The company will step into the spotlight on the New York Stock Exchange, priced at the top of the $66-$68 per share range announced earlier this week, according to documents filed with US regulators. AFP PHOTO/Jewel SamadJEWEL SAMAD/AFP/Getty Images
The first submarine design was drafted by William Borne but never got past the drawing stage. Borne’s submarine design was based on ballast tanks which could be filled to submerge and evacuated to surface – these same principles are in use by today’s submarines Evolution of Submarine Design.
Cornelis Drebbel, a Dutchman, conceived and built an oared submersible. Goebbels’ submarine design was the first to address the problem of air replenishment while submerged.
“David Bushnell’s Turtle Submarine” Francis Barber
David Bushnell builds the one-man human-powered Turtle submarine. The Colonial Army attempted to sink the British warship HMS Eagle with the Turtle. The first submarine to dive, surface and be used in Naval combat, its intended purpose was to break the British naval blockade of New York harbor during the American Revolution. With a slight positive buoyancy, it floated with approximately six inches of the exposed surface. The turtle was powered by a hand-driven propeller. The operator would submerge under the target, and using a screw projecting from the top of Turtle, he would attach a clock-detonated explosive charge.
“Robert Fulton’s “Nautilus” Submarine” LOC
Robert Fulton builds the Nautilus submarine which incorporates two forms of power for propulsion – a sail while on the surface and a hand-cranked screw while submerged.
“Holland VII” LOC
John P. Holland introduces the Holland VII and later the Holland VIII (1900). The Holland VIII with its petroleum engine for surface propulsion and electric engine for submerged operations served as the blueprint adopted by all the world’s navies for submarine design up to 1914.
The French submarine Aigrette is the first submarine built with a diesel engine for surface propulsion and an electric engine for submerged operations. Diesel fuel is less volatile than petroleum and is the preferred fuel for current and future conventionally powered submarine designs.
The German U-boat U-264 is equipped with a snorkel mast. This mast which provides air to the diesel engine allows the submarine to operate the engine at a shallow depth and recharge the batteries
The German U-791 uses Hydrogen Peroxide as an alternative fuel source.
“USS Nautilus” U.S. Navy
The U.S. launches the USS Nautilus – the world’s first nuclear-powered submarine. Nuclear power enables submarines to become true “submersibles” – able to operate underwater for an indefinite period of time. The development of the Naval nuclear propulsion plant was the work of a team Navy, government and contractor engineers led by Captain Hyman G. Rickover.
“USS Skipjack “U.S Navy
The U.S. introduces the USS Albacore with a “tear drop” hull design to reduce underwater resistance and allow greater submerged speed and maneuverability. The first submarine class to use this new hull design is the USS Skipjack.
“USS George Washington “U.S. Navy
The USS George Washington is the world’s first nuclear powered ballistic missile firing submarine.