Speedboat with Neptune outboard motor. Part No. 3811. A lovely boat ,that I consider myself lucky to have in my collection. Powered by 1 'C' cell , or HP11 in 1960s/70s money. I like these boats with a 'driver' ; I especially like the facial expression , usually grim determination , but this one has a face with a nice smile. There is a video of this boat trundling around my paddling pool. Click on the image and thumb through the gallery.