Liberdade class underwater glider

Buoyancy-propelled autonomous undersea vehicle

Liberdade class blended wing bodies are autonomous underwater gliders developed by the US Navy Office of Naval Research which use a blended wing body hullform to achieve hydrodynamic efficiency. It is an experimental class whose models were originally intended to track quiet diesel electric submarines in littoral waters, move at 1–3 knots and remain on station for up to six months. The "Liberdade" was the name of a ship built by Joshua Slocum prior to the one he single-handedly piloted around the world.

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