Turbosail

A turbosail is like a special kind of sailboat sail that helps to make the boat go faster by using wind power. When the wind blows, it pushes against the sail and helps the boat move forward. But a turbosail is different from a regular sail because it has a big metal tube called a "rotating cylinder" on top of the sail. When the wind blows, it spins the cylinder around, and this helps to create even more wind that the sail can use to make the boat go faster. So, it's like a fancy sail that makes the boat go super fast by using extra wind power!