The U.S. Navy's ALVIN (DSV-2) is still on loan to the Woods Hole Oceanographic institute, and was refitted in 2011. She began shallow diving operations in 2012, and is expected to be back at full depth capability by 2015.
ALVIN is no spring chicken though, and a possible replacement has been in the works for some time. However, given budget constraints, that'll likely get put on the back burner.
Alvin
The submersible found the Titanic and was used for many research projects. -74
the alvin by robert ballard
JJ short for Jason Junior, it was launched from the submersible Alvin.
A submersible well pump is a pump that is used for pumping water from wells. There are websites that offer submersible well pumps for sale if you need one.
It is used to go underwater.
"Bathyscaph" is a deep-sea submersible designed for exploring the ocean's depths, typically descended by means of buoyancy rather than propellers. The term "bathyscaphe" is often used interchangeably. Famous examples include the Trieste and the Alvin.
Submersible pumps can be applied to many distinct applications, from pumping large solids or grinding solids to smaller sizes, to transferring waste water at large flow rates or high pressures, to simply pumping up water off the floor or the bottom of a tank; depending upon submersible pump design. Some of the more common submersible pumps designed for specific applications include water submersible pumps, sewage submersible pumps, 12 volt submersible pumps, sand submersible pumps, irrigation submersible pumps, and solar submersible pumps. Solar submersible pumps, while not specific to an application, are best used for slow and steady water transference into a holding tank, but may also be used for direct pressurization applications.... that's my answer... shreya :)
It is sometimes used to conduct deep-sea research.
Primarily in submersible well pumps. There are also applications in fountains, indoor recirculating waterfalls and sump pumps.
It is submersible motor.
A submersible has to be used, as it has been built specially to withstand the tremendous pressure in the deep ocean depths.