16th century painting of Alexander the Great, lowered in a glass submersible

Retired modern submersible Star III of Scripps Institution of Oceanography

Błotniak

Experimental Sub dive in Monterey Bay. Alexander the Great ( or, Mégas Aléxandros; July 20 356 BC June 10 or June 11 323 BC also known as Alexander III of Macedon (el Ἀλέξανδρος Γ' Scripps Institution of Oceanography (sometimes referred to as SIO, Scripps Oceanography or just Scripps) in La Jolla California, is one of the Błotniak ( Polish for " Harrier " is a one-man Wet-cabin underwater craft designed in Poland in 1978. In a radical redesign of the submarine, it "flies" underwater like a plane rather than using ballast like a blimp. The designer thinks that a variation of this design can reach the bottom of the deepest trench in the ocean.

A submersible , or bathyscaphe, is a type of underwater vessel with limited mobility which is typically transported to its area of operation by a surface vessel or large submarine. A bathyscape, bathyscaphe, or bathyscaph is a free-diving self-propelled deep-sea Diving Submersible, consisting of a crew cabin similar Underwater is a term describing the realm below the surface of Water where the water exists in a natural feature (called a body of water) such as an Ocean Apart from size, the technical difference between a 'submersible' and a 'submarine' is that submersibles are not totally autonomous. They may rely on a support facility or vessel for charging of batteries, high pressure air, high pressure oxygen replenishment, or all of these. The main problem with submersibles is that they may be relatively small, holding only a small crew.

A submersible vessel has greater mobility, using propeller screws or pump-jets, than submersible chambers (diving chambers or diving bells), which are suspended from a cable and winch operated from the diving support vessel. A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an A pump-jet or water jet is a marine system that creates a jet of Water for propulsion. A diving chamber or submersible chamber has two main functions as a simpler form of submersible vessel to take divers Underwater A diving bell, also known as a wet bell, is a cable-suspended airtight chamber open at the bottom like a Moon pool structure that is lowered Underwater A cable is one or more Wires or Optical fibers bound together typically in a common protective jacket or sheath A winch is a mechanical device that is used to pull in (wind up or let out (wind out or otherwise adjust the " Tension " of a Rope or Wire rope A diving support vessel is a Ship that is used as a floating base for Professional diving projects

Operation

Submersibles differ from submarines in that submersibles typically have shorter range, and operate underwater almost exclusively, having little function at the surface. A submarine is a Watercraft that can operate independently below water as distinct from a Submersible that has only limited underwater capability Many submersibles operate on a "tether" or "umbilical", remaining connected to a tender (a submarine, surface vessel or platform). A ship's tender, usually referred to as a tender, is a Boat, or a larger ship used to service a Ship, generally by transporting people and/or supplies It can dive over 6 miles (10 km).

ROVs

Small unmanned submersibles called "marine remotely operated vehicles" or MROVs are widely used today to work in water too deep or too dangerous for divers. Remotely operated underwater vehicles (ROVs is the common accepted name for tethered underwater Robots in the offshore industry

Remotely operated vehicles (ROVs) repair offshore petroleum platforms and attach cables to sunken ships to hoist them. Remotely operated underwater vehicles (ROVs is the common accepted name for tethered underwater Robots in the offshore industry Petroleum ( L petroleum, from Greek πετρέλαιον, lit Such remotely operated vehicles are attached by a tether (a thick cable providing power and communications) to control center on a ship. Operators on the ship see video images sent back from the robot and may control its propellers and manipulator arm. The wreck of the Titanic was explored by such a vehicle, as well as by a manned vessel. Construction The Titanic was a White Star Line ocean liner built at the Harland and Wolff shipyard in Belfast, Ireland

Among the most famous submersibles is the deep-submergence research vessel DSV Alvin. Alvin ( DSV-2) is a 16-ton manned deep-ocean research Submersible owned by the United States Navy and operated by the Woods Hole Oceanographic

See also

• Timeline of underwater technology
• Diving chamber
• Diving bell
• Benthoscope
• Bathyscaphe
• Bathysphere

External links

• Deep Flight Submersibles
• Information and pictures of Sport Submersibles
• U-Boat Worx - Personal Recreational Submersibles
• Acrylic Submersibles
• Personal Submersibles

Sources

Polmar, Norman. This is a Timeline of Underwater Technology. The entries marked ## are about Decompression tables Pre-industrial A diving chamber or submersible chamber has two main functions as a simpler form of submersible vessel to take divers Underwater A diving bell, also known as a wet bell, is a cable-suspended airtight chamber open at the bottom like a Moon pool structure that is lowered Underwater The Benthoscope was a deep sea Submersible designed by Otis Barton after the Second World War. A bathyscape, bathyscaphe, or bathyscaph is a free-diving self-propelled deep-sea Diving Submersible, consisting of a crew cabin similar A bathysphere is a Spherical deep-sea Submersible which is unpowered and is lowered into the ocean on a cable "Bathyscaph. " World Book Online Reference Center. 2008. [Place of access. ] 26 Jan. 2008 http://worldbookonline.com/wb/Article?id=ar049420.