Inside Airlander 10, the world's longest aircraft

One must test the new rudder before sailing. this flap rudder is just one of the unique rudder designs. Also known as the Becker rudder. a flap rudder is a specific type of multi-section rudder used on boat and ships. The flap rudder is designed to improve the effective lift generated by the rudder and hence improve the manoeuvrability of the ship. Credit @shipspotter_hayriyay | Oceanic Insight

Pedal Boat