The Glider is an autonomous vehicle which moves up and down in the ocean by changing buoyancy.
Wings allow steerable gliding, thus horizontal propulsion.
This vehicle will trace a sawtooth profile, observing temperature, conductivity, etc. versus depth, and, at the surface, fix position via GPS and communicate via appropriate satellite. Webb Research has developed a heat engine which draws energy from the ocean thermocline. The work required to change buoyancy results from heat flow from warm surface to cooler deep water, so the vehicle can cycle thousands of times between the surface and some programmed depth. This design will be used in the long-range deep ocean glider. This design will be used in the coastal glider.