Pacemaker, uniflite & chris-craft’s 46′ motoryacht by jack hornor revised by boatus editors in october 2012. why try to improve on one of the best looking and. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood. Of the 108 cobras that chris-craft built in 1955 at least 80 are still in existence. some have been fully restored including this 21-footer owned by boyd mefferd..