Speedboats are small in tonnage, high in speed, and flexible in maneuverability. The displacement is usually tens to hundreds of tons, the sailing speed is 30 to 40 knots, and some can reach 50 knots, and the endurance is 500-3000 nautical miles. The boats are equipped with weapons, and some speedboats are also equipped with 20-76mm caliber naval guns. Larger tonnage speedboats may also contain mines, depth charges, etc. The matching sensing systems include search, detection, weapon control, communication and navigation, and electronic warfare.