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  2. Surfboard - Wikipedia

    en.wikipedia.org/wiki/Surfboard

    Bullet Fins were invented in the 2005 by Ron Pettibone to increase surfboard hull planing and rail-to-rail transition speed. The patent-pending fins are based on 50 years of hydrodynamic research on the bulbous bow hull design. Just as with the bow of a ship, the traditional surfboard fin creates a wave as it displaces the water in its path.

  3. Planing (boat) - Wikipedia

    en.wikipedia.org/wiki/Planing_(boat)

    (Exceptions to this include surfboards and other recreational planing hulls, which utilize rocker throughout for enhanced maneuverability when banking through turns.) In contrast, in a displacement, or non-planing hull, the bottom is curved in side view (the curvature is called "rocker") all the way from bow to stern, in order to minimize wave ...

  4. Standup paddleboarding - Wikipedia

    en.wikipedia.org/wiki/Standup_paddleboarding

    In 2007, the concept of paddleboarding on flat water began to take serious shape and a year later the first touring boards started to hit the market. This style of the board differs from traditional surfing-style SUPs in that it includes a displacement hull. The displacement hull allows the board to glide and track similar to a canoe or kayak ...

  5. Hull speed - Wikipedia

    en.wikipedia.org/wiki/Hull_speed

    Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well.

  6. Surf-class lifeboat - Wikipedia

    en.wikipedia.org/wiki/Surf-class_lifeboat

    The Surf-class was a light non self-righting displacement hull motor lifeboat built between 1935 and 1940 and operated by the Royal National Lifeboat Institution (RNLI) between 1936 and 1965. History [ edit ]

  7. Hull (watercraft) - Wikipedia

    en.wikipedia.org/wiki/Hull_(watercraft)

    Displacement hull: here the hull is supported exclusively or predominantly by buoyancy. Vessels that have this type of hull travel through the water at a limited rate that is defined by the waterline length except for especially narrow hulls such as sailing multihulls that are less limited this way.

  8. Small-waterplane-area twin hull - Wikipedia

    en.wikipedia.org/.../Small-waterplane-area_twin_hull

    A small waterplane area twin hull, better known by the acronym SWATH, is a catamaran design that minimizes hull cross section area at the sea's surface. Minimizing the ship's volume near the surface area of the sea , where wave energy is located, minimizes a vessel's response to sea state, even in high seas and at high speeds.

  9. 47-foot Motor Lifeboat - Wikipedia

    en.wikipedia.org/wiki/47-foot_Motor_Lifeboat

    The boat's hull and superstructure are constructed entirely from 5456 marine grade aluminum. [3] Designed with a hard chined deep "V" planing hull , [ 8 ] the 47′ MLB exceeds its hull speed . The frame is composed of 17 vertical bulkhead frames, each of which is welded to the deck and hull, and five of which are watertight.

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