A boat comprising a hull (10) and a propulsion means (3) suitably coupled to an inboard drive means (8), characterized in that said hull (10) is provided with at least one hollow (2) suitably shaped to at least partially accommodate said propulsion means (3), said hollow (2) being provided with at least one tube (21) and at least one atmospheric-pressure air intake (220) in such a way that the propulsion means, that is a surface propeller (3), can continuously operate under optimal conditions with respect to the thus-generated artificial water surface.