The N.300 Naviplane was a French 30-ton multipurpose Air-cushion vehicle built by SEDAM (Société d'Etude et de Développement des Aéroglisseurs Marins) for the Naviplane series of Aéroglisseur (Hovercraft). This was a series of multi-skirt hovercraft built by SEDAM using and developing the skirt designs by French engineer Jean Bertin. The series included the , the Naviplane N300 and the N500 Naviplane, the N300 Naviplane was the first full-scale Naviplane designed for commercial use.