In most of the topics I'm going to talk about dinghy classes, dinghy races, dinghy boats and dinghy sailing. Now I going tell what is a dinghy. A dinghy is a small sailboat which doesn't have a keel, soif you aren't sitting on the right side, at the right time it can fall up, as you can see on this video: https://www.youtube.com/watch?v=nDToL593cmU
If you have watched the video, you may seen that in some boats one of the crew is standing vertical on the side of the boat, that is called trapeze and this is for balanceing the boat.