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A submersible is an underwater vehicle which needs to be transported and supported by a larger watercraft or platform. This distinguishes submersibles from submarines , which are self-supporting and capable of prolonged independent operation at sea.
Turtle (also called American Turtle) was the world's first submersible vessel with a documented record of use in combat. It was built in 1775 by American David Bushnell as a means of attaching explosive charges to ships in a harbor, for use against the Royal Navy during the American Revolutionary War.
A 16th-century Islamic painting depicting Alexander the Great being lowered in a glass submersible. The concept of underwater transport has roots deep in antiquity. There are images of men using hollow sticks to breathe underwater for hunting at the temples at Thebes, and the first known military use occurred during the siege of Syracuse (415–413 BC), where divers cleared obstructions ...
Building "Turtle" submersible A diagram of Bushnell's American Turtle David Bushnell (August 30, 1740 – 1824 or 1826), of Westbrook, Connecticut , was an American inventor , a patriot , a teacher, and a medical doctor.
A cross-section of Fulton's 1806 submarine design. Though knowing the French had no further interest, the British wished to ensure a man of Fulton's talents were on their side; offering him £800 to come to England (his original planned destination before going to France) and develop a second Nautilus for them.
The Bathysphere on display at the National Geographic museum in 2009. The Bathysphere (from Ancient Greek βαθύς (bathús) 'deep' and σφαῖρα (sphaîra) 'sphere') was a unique spherical deep-sea submersible which was unpowered and lowered into the ocean on a cable, and was used to conduct a series of dives off the coast of Bermuda from 1930 to 1934.
A “submersible canoe” was invented by the Italians during World War I. The idea was successfully applied by the Italian Navy (Regia Marina) also early in World War II. The official Italian name for their craft was Siluro a Lenta Corsa (SLC or "Slow-running torpedo").
He co-invented the first successful open-circuit self-contained underwater breathing apparatus (SCUBA), called the Aqua-Lung, which assisted him in producing some of the first underwater documentaries. Cousteau wrote many books describing his undersea explorations.