Up for bid is a 1960's model Dolphin Cargo Ship by AMF Mac Wen. The original box measures 28.5" long x 5.5" x 4.5". "Moves through the water under its own battery power, Rolls on land with concealed wheels". The Dolphin has an adjustable rudder. I added 2 new D batteries and the propeller worked intermittently, just needs to be tinkered with.