dagger board

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dagger board

[′dag·ər ‚bȯrd]
(naval architecture)
A device used in a sailing vessel to increase the area of lateral resistance; it is a narrow metal flat or wooden board that slides up and down in the trunk, which extends from inside the hull to the bottom.
References in periodicals archive ?
According to Brett Ellis, the lead daggerboard engineer at Artemis Racing, the design limits are being pushed all the time to maintain the advantage required to win the prestigious race.
I must say a big thank you to the Foncia team for proposing that we use their spare daggerboard.
Launched in December 2014 for George David, the former United Technologies Corporation chairman and CEO, Rambler 88is an all-carbon and canting boat, with long daggerboards and a deep chine.
84 -metre daggerboards, which look more inboard than Comanche and angled, to create lift as well as reduce leeway.
Built to a single, tightly controlled set of plans from Farr Yacht Design in the US, designed to withstand the toughest conditions on the planet, the VO65 is a collaboration among a consortium of four boatyards: Persico (Italy) for the hull, the daggerboards and some internal structure; Multiplast (France) for the deck and some components; Decision (Switzerland) for the internal structure; and Green Marine (United Kingdom) for final assembly and many of the components, including the galley, media station, rudders and steering wheels.
Richards and the crew now affectionately refer to their charge as the 'Swiss Army Knife', because of the number of appendages she boasts: a hydrofoil wing, a retractable forward centreboard, two retractable daggerboards, a canting keel, and the conventional rudder at the stern.
The hulls are resin infused, carbon/e-glass hybrid construction with foam core and are held together with carbon crossbeams, and for upwind performance daggerboards are used.
The innovation adds to Wild Oats XI's blade armoury of rudder, canting keel, two retractable daggerboards and a retractable forward foil, which it uses in light, upwind work with the daggerboards retracted.