Retired modern submersible Star III of Scripps Institution of Oceanography
Experimental sub dive in Monterey Bay of the DeepFlight Aviator. In a radical redesign of the submarine, it "flies" underwater like an airplane rather than using ballast like a blimp. The designer, Graham Hawkes, thinks that a variation of this design could reach the bottom of the deepest trench in the ocean.

A submersible is a small vehicle designed to operate underwater. The term submersible is often used to differentiate from other underwater vehicles known as submarines, in that a submarine is a fully autonomous craft, capable of renewing its own power and breathing air, whereas a submersible is usually supported by a surface vessel, platform, shore team or sometimes a larger submarine. In common usage by the general public, however, the word submarine may be used to describe a craft that is by the technical definition actually a submersible. There are many types of submersibles, including both crewed and uncrewed craft, otherwise known as remotely operated vehicles or ROVs.[1] Submersibles have many uses worldwide, such as oceanography, underwater archaeology, ocean exploration, adventure, equipment maintenance and recovery, and underwater videography.[2]


The first underwater vessel was designed and built by American inventor David Bushnell in 1775 as a means to attach explosive charges to enemy ships during the American Revolutionary War. The device, dubbed Bushnell's Turtle, was an oval-shaped vessel of wood and brass. It had tanks that were filled with water to make it dive and then emptied with the help of a hand pump to make it return to the surface. The operator used two hand-cranked propellers to move vertically or laterally under the water. The vehicle had small glass windows on top and naturally luminescent wood affixed to its instruments so that they could be read in the dark.

Bushnell's Turtle was first set into action on September 7, 1776 at New York Harbor to attack the British flagship HMS Eagle. Sergeant Ezra Lee operated the vehicle at that time. Lee successfully brought the Turtle against the underside of Eagle's hull but failed to attach the charge because of the strong water currents.

Other Languages
العربية: غاطسة
Esperanto: Submarŝipeto
한국어: 잠수정
italiano: Sommergibile
日本語: 潜水艇
slovenščina: Podvodno plovilo
Tagalog: Submersible
اردو: آبدوزیہ