
Mini Mortar Mortar Boat(MMMB) Competition is a competition for mini motorboats made from cement and concrete materials developed at the Hokkaido University, Architectural Materials Science Laboratory in March 2026. From May 2026, it was implemented as part of Building Material Practice, as a group project for third-year undergraduate students, as part of a student exercise. This page will sequentially document the manufacturing of mini mortar motorboats, regulation establishments, and other related information.