A Dutch sailing barge showing its stowed windward leeboard, hiked up with wind from starboardLeeboard deployed on a Thames sailing barge on the East SwinThe Centennial a 1979 Ted Brewer sharpie fitted with leeboards
A leeboard is a form of pivoting keel used by a sailboat largely and very often in lieu of a fixed keel. Typically mounted in pairs on each side of a hull, leeboards function much like a centreboard, allowing shallow-draft craft to ply waters fixed keel boats cannot.
Only the leeward side leeboard is used at any time, as it submerges when the boat heels under the force of the wind.
A disadvantage, where there is an inadequate fixed keel, is that they typically ship (bear) little ballast, which being on the far side delays the onset of unballasted craft's heeling, that is, to put up a good, constant resistance against the wind. The classical, archetypal definition of ballast is a low, central weight to optimise centre of mass, reduce turning moment and therefore resistance to the boat keeling over, however tends to be higher in self-righting vessels. Modern developments allow them to act as a speed-enhancing lifting foil.
A leeboard is a form of pivoting keel used by a sailboat largely and very often in lieu of a fixed keel. Typically mounted in pairs on each side of a hull...
in a more upright position. Coin ceremony Kelson False keel Daggerboard Leeboard Bilgeboard Bruce foil Keelhauling – an archaic maritime punishment Keel...
businessman Hamilton Sabot (born 1987), French gymnast Sabot (dinghy), a type of leeboard dinghy Naples Sabot, a type of centerboard dinghy US Sabot, an American...
A Bruce foil is a variant of the leeboard, consisting of a foil typically mounted on an outrigger and always set at an angle to provide both lateral and...
relative to the hull. If a daggerboard is located off center, it is called a leeboard or a bilgeboard. The characteristic which differentiates daggerboards from...
used in a sailboat, which resembles a cross between a centerboard and a leeboard. Bilgeboards are mounted between the centerline of the boat and the sides...
Thames in London. The flat-bottomed barges, with a shallow draught and leeboards, were perfectly adapted to the Thames Estuary, with its shallow waters...
drift due to their flat bottoms, smaller vessels were usually fitted with leeboards. After 1830, a modernised type of galiot was developed that featured a...
would have gaff rig, a bluff bow and stern, a pair of leeboards and a large rudder. The leeboards and rudder would be raised by an arrangement of blocks...
shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open water, while modern recreational keelboats have prominent...
while the prima nave was equipped with two. Similar pairs of steering leeboards appear frequently in early 2nd-century depictions of ships. The seconda...
are therefore more expensive. The Bruce foil is an example of a type of leeboard often attached to an ama to assist in producing lift. Even though double-outrigger...
was poor by modern standards as there was no centreboard, deep keel or leeboard. To assist in tacking the beitaass kept the luff taut. Bracing lines were...
known for popularizing what has become known as the 'Bruce foil', a canted leeboard (hydrofoil) set at some distance athwartships within an outrigger to function...
materials. Bolger also advocated the use of traditional sailing rigs and leeboards. From the 1990s, Phil Bolger teamed with his wife Susanne Altenburger...
Yuan of Liang (r. 552–554 AD). Leeboard: To avoid leeward drift caused by the force of wind while sailing, the leeboard was invented; it was a board lowered...
An 18th-century Dutch yacht owned by the Rotterdam chapter of the Dutch East India Company. This yacht has the gaff rig and leeboards of the period....
(article) "Moonyass", Leeboard Press, 1990 (Novel) "The Magic Fish and Other Stories From the Little Creek Reserve", Leeboard Press, 1992 (Short Stories)...
A self-rescue dinghy intended to be used as a proactive lifeboat has leeboards on either side, to allow for maximum open cockpit area. Solar propulsion...
hull, sail attachments fold or disassemble to fit in a compact bundle. Leeboards on the sides perform the same function as a centerboard, so users can...
phenomena. To counter this, they use a rudder or skeg. Centerboard Keel Leeboard Rudder Skeg Chapman (1994), Piloting Seamanship & Small Boat Handling,...
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