The one piece water way has a snap on "Wave Maker" device to propel the 4 barge type boats. A 9 1/4" tall 360 degree rotating crane sevices both the waterway and the sand pit. Also, includes a flatbed truck designed to hold the cargo units. 3 stop gates control the flow of boat traffic. Measures 19" x 17 1/4" x 8 7/8".