Maritime drone, which comprises: - a hull provided with an upper face and with a lower face and at least partially defining a containment volume at its interior; - at least one wing sail, which is extended along a main extension direction transverse to the upper face of said hull, is mounted on said hull and is provided with a wing profile susceptible of intercepting the wind in order to move said maritime drone; wherein the wing profile of said wing sail is extended, along a direction orthogonal to said main extension direction, being tapered from a leading edge towards an opposite trailing edge; said wing sail being movable between an operative position, in which said wing profile projects from the upper face of said hull in order to be exposed to the wind, and a non-operative position, in which said wing profile is at least partially housed in said containment volume in order to be retracted from the wind; - first movement means mechanically connected to said hull and to said wing sail and arranged in order to move said wing sail between said operative position and said non-operative position; - second movement means mechanically connected to said hull and to said wing sail and arranged, at least with said wing sail in operative position, for rotating said wing sail around a rotation axis substantially parallel to the main extension direction of said wing sail; wherein said first movement means are arranged for moving said wing sail along a translation axis substantially parallel to said main extension direction; said hull being provided, on said upper face, with a through opening in communication with said containment volume; said second movement means comprising a motorized slewing bearing provided with: - a stator ring, fixed to said hull at said through opening; - a rotatable support, which is rotatably and coaxially mounted on said stator ring around the rotation axis of said wing sail, is rotatably integral with said wing profile, and is provided with a through guide channel, extended axially parallel to said translation axis, communicating with said containment volume and carrying, slidably inserted, the wing profile of said wing sail along said translation axis; - motor means mechanically connected to said rotatable support and arranged for rotating said rotatable support around said rotation axis. - a hull provided with an upper face and with a lower face and at least partially defining a containment volume at its interior; - at least one wing sail, which is extended along a main extension direction transverse to the upper face of said hull, is mounted on said hull and is provided with a wing profile susceptible of intercepting the wind in order to move said maritime drone; wherein the wing profile of said wing sail is extended, along a direction orthogonal to said main extension direction, being tapered from a leading edge towards an opposite trailing edge; said wing sail being movable between an operative position, in which said wing profile projects from the upper face of said hull in order to be exposed to the wind, and a non-operative position, in which said wing profile is at least partially housed in said containment volume in order to be retracted from the wind; - first movement means mechanically connected to said hull and to said wing sail and arranged in order to move said wing sail between said operative position and said non-operative position; - second movement means mechanically connected to said hull and to said wing sail and arranged, at least with said wing sail in operative position, for rotating said wing sail around a rotation axis substantially parallel to the main extension direction of said wing sail; wherein said first movement means are arranged for moving said wing sail along a translation axis substantially parallel to said main extension direction; said hull being provided, on said upper face, with a through opening in communication with said containment volume; said second movement means comprising a motorized slewing bearing provided with: - a stator ring, fixed to said hull at said through opening; - a rotatable support, which is rotatably and coaxially mounted on said stator ring around the rotation axis of said wing sail, is rotatably integral with said wing profile, and is provided with a through guide channel, extended axially parallel to said translation axis, communicating with said containment volume and carrying, slidably inserted, the wing profile of said wing sail along said translation axis; - motor means mechanically connected to said rotatable support and arranged for rotating said rotatable support around said rotation axis. - a stator ring, fixed to said hull at said through opening; - a rotatable support, which is rotatably and coaxially mounted on said stator ring around the rotation axis of said wing sail, is rotatably integral with said wing profile, and is provided with a through guide channel, extended axially parallel to said translation axis, communicating with said containment volume and carrying, slidably inserted, the wing profile of said wing sail along said translation axis; - motor means mechanically connected to said rotatable support and arranged for rotating said rotatable support around said rotation axis.