The U.S.S. Kobayashi Maru was designed by veteran Star Trek designers John Eaves and Ale Jaeger as it was seen in JJ Abrams 2009 movie during the Starfleet training scenario that shares it's name. The scenario is famously impossible to win but thanks to some creative thinking from James T. Kirk, the U.S.S. Kobayashi Maru manages to fend off a Klingon attack!  It measures approximately 5.5inches long and has been painstakingly recreated in die-cast and high-quality ABS materials.