"Design it, Drive it: Speedboats" is a speedboat simulator with high fidelity physics that lets you design and drive your own speedboats from dozens of adjustable parameters on a Windows PC, then compete against other players via leaderboards in top speed shootouts, solo time trials on lapped or point to point courses, or just free drive as you please to explore the world and your design's handling characteristics with no constraints. Whether you end up with boats that are slow, fast, turn well, chine walk, or tend to blow over at high speeds or not depends on what you do with the shape and design of the hull.
This is not your typical boat game. It's more of a design tool and physics sandbox/waterbox, a serious, hardcore simulator used by real life boat racers around the world including Formula 1, 2, 3, 4, 5, offshore powerboat, and other series racers to keep their skills sharp between races and train muscle memory. Real life high performance boat driving skills such as chine walk control and engine trim management can be learned safely.