G-W Invader is a line of small recreational power boats that were manufactured by Arne Gray and George Wooldridge of Sharpsville, Indiana, United States. ==History== G-W Invader, (sometimes listed as GW Invader), began production in 1967 with its 10-foot and 16-foot boats. The `G-W` indicated the last names of the founders. The initial designs o.....