A ground effect craft having a ground effect wing, a plurality of sponsons, and a control system is disclosed. The ground effect wing may include a fore ground effect wing and an aft ground effect wing. The ground effect wing may generate a stabilizing moment on at least one sponson to stabilize the ground effect craft. The plurality of sponsons may be dynamically coupled to the body. The plurality of sponsons may be dynamically coupled to each other. The dynamic coupling may permit the sponsons to move relatively independent of the body and each other, thereby stabilizing the ground effect craft. The ground effect craft may include a stabilizing wing.

A ground effect craft having a ground effect wing, a plurality of sponsons, and a control system is disclosed. The ground effect wing may include a fore ground effect wing and an aft ground effect wing. The ground effect wing may generate a stabilizing moment on at least one sponson to stabilize the ground effect craft. The plurality of sponsons may be dynamically coupled to the body. The plurality of sponsons may be dynamically coupled to each other. The dynamic coupling may permit the sponsons to move relatively independent of the body and each other, thereby stabilizing the ground effect craft. The ground effect craft may include a stabilizing wing.

An assembly and inspection cart for precision equipment includes a frame that has three support portions to support the precision equipment at three points, air float devices attached to the frame at three positions, a rubber roller and a motor that are provided so as to be freely lifted and lowered with respect to the frame, and an air cylinder that lifts and lowers the rubber roller. The air float device floats the frame together with the precision equipment and forms an air layer between the frame and a floor surface. The rubber roller is arranged at a center of the three air float devices and is configured so as to press against the floor with a predetermined force when lowered by the air cylinder in a state where the frame is floated.

A ground effect craft having a ground effect wing, a plurality of sponsons, and a control system is disclosed. The ground effect wing may include a fore ground effect wing and an aft ground effect wing. The ground effect wing may generate a stabilizing moment on at least one sponson to stabilize the ground effect craft. The plurality of sponsons may be dynamically coupled to the body. The plurality of sponsons may be dynamically coupled to each other. The dynamic coupling may permit the sponsons to move relatively independent of the body and each other, thereby stabilizing the ground effect craft. The ground effect craft may include a stabilizing wing.

An assembly and inspection cart for precision equipment includes a frame that has three support portions to support the precision equipment at three points, air float devices attached to the frame at three positions, a rubber roller and a motor that are provided so as to be freely lifted and lowered with respect to the frame, and an air cylinder that lifts and lowers the rubber roller. The air float device floats the frame together with the precision equipment and forms an air layer between the frame and a floor surface. The rubber roller is arranged at a center of the three air float devices and is configured so as to press against the floor with a predetermined force when lowered by the air cylinder in a state where the frame is floated.