The bubbles travel along the hull, reducing friction and thus, increase gas mileage. Since ships are one of the largest consumers of diesel fuel in the world, so this idea is meant to get some attention along with some other ideas like boats attaching a giant wind turbine or adding parachute-like sails on the ship to increase efficiency.
Colin Bennett (602)
Sergio Ferreira (85)
Glycon Garcia (55)
Emil Milker (40)
Hans De Keulenaer (37)