SmallCraftAdvisor.com

An exact replica (ok, plus a diesel engine & running lights) of the Nina & a near replica of the Pinta are touring as a sort of floating museum. If you are near a port on their schedule, go. I know these aren't exactly "Small Craft", but the reason there is no Santa Maria is because she was a lumbering slow ship that draws too much to take on the rivers to tour.
www.thenina.com has info and the tour schedule.