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  2. Forces on sails - Wikipedia

    en.wikipedia.org/wiki/Forces_on_sails

    True wind (V T) is the same everywhere in the diagram, whereas boat velocity (V B) and apparent wind (V A) vary with point of sail. Forces on sails result from movement of air that interacts with sails and gives them motive power for sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and sail-powered land vehicles.

  3. Windmill ship - Wikipedia

    en.wikipedia.org/wiki/Windmill_ship

    A windmill ship, wind energy conversion system ship or wind energy harvester ship propels itself by use of a wind turbine to drive a propeller. They use wind power [1] through a mechanical or electrical transmission to the propeller. Where transmission is electric, storage batteries may also be used to allow power generated at one time to be ...

  4. Development of tidal stream generators - Wikipedia

    en.wikipedia.org/wiki/Development_of_tidal...

    SME placed the turbines into storage and removed all of the equipment from the seabed. [86] However, one of the turbines broke its moorings and washed ashore in November 2023. [87] In October 2022, the company split out its anchoring solutions as Swift Anchors, with the aim to focus on different technologies including Floating offshore wind. [88]

  5. Volvo Penta has a new system that will make docking boats way ...

    www.aol.com/volvo-penta-system-docking-boats...

    Volvo Penta launched the first-ever fully assisted docking system, which will give the boat's captain more control of the docking process. Volvo Penta has a new system that will make docking boats ...

  6. Wind turbine design - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine_design

    An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub

  7. Rotor ship - Wikipedia

    en.wikipedia.org/wiki/Rotor_ship

    When the wind blows from the side, the Magnus effect creates a forward thrust. The most common form of rotor sail is the Flettner rotor. [4] [failed verification] The wind does not power the rotor, which is rotated by its own power source. Due to the arrangement of forces, a rotor ship is able to sail closer to the wind than a conventional ...

  8. Floating wind turbine - Wikipedia

    en.wikipedia.org/wiki/Floating_wind_turbine

    Blue H Technologies - World's first floating wind turbine (80 kW), installed in waters 113 metres (371 ft) deep in 2007, 21.3 kilometres (13.2 mi) off the coast of Apulia, Italy The world's second full-scale floating wind turbine (and first to be installed without the use of heavy-lift vessels), the 2 MW WindFloat, about 5 km offshore of Aguçadoura, Portugal University of Maine's 20 kW ...

  9. Dry dock - Wikipedia

    en.wikipedia.org/wiki/Dry_dock

    A floating dry dock is a type of pontoon for dry docking ships, possessing floodable buoyancy chambers and a U-shaped cross-section. The walls are used to give the dry dock stability when the floor or deck is below the surface of the water. When valves are opened, the chambers fill with water, causing the dry dock to float lower in the water ...