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A sail plan is a drawing of a sailing craft, viewed from the side, depicting its sails, the spars that carry them and some of the rigging that supports the rig. [1] By extension, "sail plan" describes the arrangement of sails on a craft. [2] [3] A sailing craft may be waterborne (a ship or boat), an iceboat, or a sail-powered land vehicle.
Hull shapes for sailing ships evolved from being relatively short and blunt to being longer and finer at the bow. [36] [obsolete source] By the nineteenth century, ships were built with reference to a half model, made from wooden layers that were pinned together. Each layer could be scaled to the actual size of the vessel in order to lay out ...
S-bottom hulls are sailing boat hulls with a midships transverse half-section shaped like an s. [clarification needed] In the s-bottom, the hull has round bilges and merges smoothly with the keel, and there are no sharp corners on the hull sides between the keel centreline and the sheer line. Boats with this hull form may have a long fixed deep ...
A line tied with a cleat hitch to a horn cleat [1] on a dock. The line comes from a boat off the top of the picture, around the right horn, around the left horn, across the cleat from top left to bottom right, around the right horn, and then hitches around the left horn.
A 1:1 scale construction drawing of a boat and its parts Lines plan A scaled-down version of a full-sized drawing often including the body, plan, profile, and section views Body Plan A view of the boat from both dead ahead and dead astern split in half Plan view A view looking down on the boat from above Profile view A view of the boat from the ...
The physics of sailing arises from a balance of forces between the wind powering the sailing craft as it passes over its sails and the resistance by the sailing craft against being blown off course, which is provided in the water by the keel, rudder, underwater foils and other elements of the underbody of a sailboat, on ice by the runners of an ...
Commonly used on commercial fishing boats using nets; and Kevlar, an extremely strong and expensive fibre with almost no stretch, usually braided and best suited for halyards. Taff rail: a railing at the extreme stern of a vessel. Thwart: a transverse member used to maintain the shape of the topsides of a small boat, often doubling as a seat.
Boats may be sailed using a jib alone, but more commonly jibs make a minor direct contribution to propulsion compared to a main sail. Generally, a jib's most crucial function is as an airfoil , increasing performance and overall stability by reducing turbulence on the main sail's leeward side.