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The design was built by Russell Marine in Essex, England, starting in 1963, but it is now out of production. The boat was produced complete and ready to sail or as a kit for amateur completion. It was also imported in the United States by Wells Yachts starting in the early 1960s. [1] [2] [3]
The Snapdragon 747 is a British trailerable sailboat that was designed by Thames Structural Plastics, a division of Thames Marine, as a cruiser and first built in 1964. [1] The Snapdragon 747 is a development of the Snapdragon 24, with a modified rig and a new skeg-mounted rudder design. [1]
The design was built by Corsair Marine in the United States, starting in the early 1990s as the F-24. The name was changed to the Corsair 24 in 2000 when Farrier left the company and some minor changes made to the design. Production ran until 2003, with 200 Mark II boats completed, but it is now out of production. [1] [2] [7] [8]
The flap rudder is designed to improve the effective lift generated by the rudder and hence improve the manoeuvrability of the craft. The rudder consists of two or more sections which move relative to each other as helm is applied and the angle of the main or driven section moves, thus the shape of the rudder changes dynamically as the angle of helm is changed.
Like all rudders, the main effect of a Schilling rudder is to deflect the flow of water generated by the propeller.Schilling rudders are most commonly used on ships that are difficult to maneuver, particularly large ships such as container ships and oil tankers, slow-moving ships and boats, longer and narrower ships, or boats with slow-moving propellers.
Servo pendulum rudder (a wind vane turns an immersed blade around its vertical axis, the blade swings out to the side due to the movement through the water and turns the ship's rudder with that). Servo pendulum with auxiliary rudder (like above, but the servo pendulum blade acts on an auxiliary rudder and not on the ship's rudder).
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn
A Z-drive is a type of marine propulsion unit. Specifically, it is an azimuth thruster. The pod can rotate 360 degrees allowing for rapid changes in thrust direction and thus vessel direction. This eliminates the need for a conventional rudder.