How do they differ from conventional submersibles?
A Dolphin operates completely differently from a conventional submersible in several key ways. While a standard submersible takes on ballast (water weight) in order to literally sink beneath the surface, a Dolphin uses its forward momentum and variable pitch diving planes to fly beneath the surface. The distinction is much like the difference between an air ship (which uses a light weight gas to obtain lift) and an airplane (which uses its wings to achieve flight). No other submersible vessel in the world today operates without the use of ballast. The advantage of this method of diving is that it allows our vessels to achieve an unparalleled level of freestyle performance. Another advantage of flying rather than sinking is that should something go wrong during a dive, the dolphin always pops to the surface and self-rights.
