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It originates from sail-powered boats and ships. Jury-rigging can be applied to any part of a ship; be it its super-structure (hull, decks), propulsion systems (mast, sails, rigging, engine, transmission, propeller), or controls (helm, rudder, centreboard, daggerboards, rigging). Similarly, a jury mast is a replacement mast after a dismasting. [2]
Generally, a rudder is "part of the steering apparatus of a boat or ship that is fastened outside the hull, " denoting all types of oars, paddles, and rudders. [1] More specifically, the steering gear of ancient vessels can be classified into side-rudders and stern-mounted rudders, depending on their location on the ship.
This construction is called "The Saye's Rigg". Another version of wind vane self steering on sail boats is known as the vertical axis vane and usually, because of the inferior steering force output compared to servo pendulum devices it makes use of a trim tab hung off the rudder to control the course of the boat. The vane spins at right angles ...
This material is very impact- and scratch-resistant, but somewhat heavier and harder to repair than fiberglass. The kick-up rudders are similar to the Hobie 16. The rigging consists of a rotating aero-dynamically shaped aluminum mast held by a forestay and two shroud wires. There is a trapeze for the crew. The mainsail does not have a boom.
Rounding-up is a phenomenon that occurs in sailing when the helmsman (or tiller-handler) is no longer able to control the direction of the boat and it heads up (or "rounds up") into the wind, causing the boat to slow down, stall out, or tack. This occurs when the wind overpowers the ability of the rudder to maintain a straight course.
Orcas have been observed using their heads to push the rudder or using their bodies to make lever movements, causing the rotation of the rudder and "in some cases pivoting the boat almost 360°". [1] Inspection of vessels reporting physical contact revealed that orcas had raked their teeth against the bow, keel, and rudders.
The Rob Roy 23 is a small recreational centerboard sailboat, built predominantly of fiberglass, with wood trim. It is a fractional Gunter rigged yawl and has an internally-mounted spade-type rudder and an L-shaped centerboard keel. It displaces 2,800 lb (1,270 kg) and carries 900 lb (408 kg) of ballast. [1] [2]
The Kitchen rudder is the familiar name for "Kitchen's Patent Reversing Rudders", a combination rudder and directional propulsion delivery system for relatively slow speed displacement boats which was invented in the early 20th century by John G. A. Kitchen of Lancashire, England.