Keelboat

A keelboat is a special kind of boat that has a big fin, like a tail, that sticks down into the water. This fin, called a keel, helps to keep the boat upright when it's sailing in strong winds, so it doesn't tip over. The keel also helps the boat to sail faster by providing more stability in the water. Keelboats can have different shapes and sizes, from small ones that can be sailed by just one or two people, to larger ones that need a crew. Keelboats are usually used for racing or cruising, which means going on a long journey or trip. People have been using keelboats for hundreds of years, and they are still very popular today for many types of water activities.