The “green” design approach is essential for the construction of lightweight structures and sustainable mobility. The use of lightweight materials is an innovative aspect of this approach; it allows the replacement of classic materials with new materials. Furthermore, 3D printing allows to obtain particularly complex shapes. The activity deals with the design of small monitoring vehicles (autonomous submarine vehicles – AUVs) and aims to make this research field known to the public through experiments and the display of small prototypes. The “Women in Science” event includes video-messages of past students whose working life is closely related to the sea.