A marine surface vessel having a main hull and at least two lateral hulls disposed
respectively on opposite sides of the main hull. The vessel includes an engine
disposed in the main hull producing exhaust gas and cooling air, microbubble injectors
disposed in subsurface areas of each of the lateral hulls, and conduits in fluid
communication with the microbubble injectors. Upon operation of the engine, the
exhaust and/or cooling air produced by the engine is directed by the conduits to
the injectors to effect generation of microbubbles on the subsurface areas of the
lateral hulls to occasion microbubble drag reduction on the lateral hulls.