Boat speed refers to how fast a boat travels through water, typically measured in knots or miles per hour. It is influenced by various factors, including the boat's design, engine power, and water conditions. Understanding boat speed is essential for navigation and safety, as it helps determine travel time and fuel efficiency. To measure boat speed, sailors often use a device called a speedometer or GPS. These tools provide real-time data on how quickly the boat is moving. Additionally, factors like wind direction and current can affect speed, making it important for boaters to consider these elements when planning their journeys.