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  2. Cleat (nautical) - Wikipedia

    en.wikipedia.org/wiki/Cleat_(nautical)

    A horn cleat is the traditional design, featuring two “horns” extending parallel to the deck or the axis of the spar, attached to a flat surface or a spar, and resembling an anvil. A cam cleat in which one or two spring-loaded cams pinch the rope, allowing the rope to be adjusted easily, and quickly released when under load.

  3. Foghorn - Wikipedia

    en.wikipedia.org/wiki/Foghorn

    Foghorn made with a marine shell, with a hole on its narrowest side An early form of fog signal: the fog bell at Fort Point Light Station, Maine. Audible fog signals have been used in one form or another for hundreds of years, initially simply seashell horns, fog bells or gongs struck manually.

  4. Horn (acoustic) - Wikipedia

    en.wikipedia.org/wiki/Horn_(acoustic)

    A patent horn loudspeaker. Loudspeakers are often built into horn-shaped enclosures or use horns. Most often the higher-frequency elements (tweeters and midranges) use horns, sometimes with acoustic diffraction lenses to spread the sound waves in a horizontal pattern at ear-level and limit the vertical pattern. An audio driver (e.g., a speaker ...

  5. Air horn - Wikipedia

    en.wikipedia.org/wiki/Air_horn

    In most horns it also determines the pitch of the sound. When vibrated by the diaphragm, the column of air in the horn vibrates in standing waves. The length of the horn determines the wavelength of the sound waves generated, and thus the fundamental frequency (pitch) of the note produced by the horn. The longer the horn, the lower the pitch.

  6. Vehicle horn - Wikipedia

    en.wikipedia.org/wiki/Vehicle_horn

    A horn is a sound-making device installed on motor vehicles, trains, boats, and other types of vehicles. The sound it makes usually resembles a “honk” (older vehicles) or a “beep” (modern vehicles). The driver uses the horn to warn others of the vehicle's presence or approach, or to call attention to some hazard.

  7. Glossary of nautical terms (A–L) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    1. A towed or self-propelled flat-bottomed boat, built mainly for river, canal or coastal transport of heavy goods. 2. Admiral ' s barge: A boat (or aircraft) at the disposal of an admiral (or other high ranking flag officer) for his or her use as transportation between a larger vessel and the shore, or within a harbor. In Royal Navy service ...

  8. Diaphone - Wikipedia

    en.wikipedia.org/wiki/Diaphone

    The entire horn apparatus was driven by a compressor. To manufacture the new equipment, Northey set up the Diaphone Signal Co. at Toronto in 1903. [6] It manufactured a range of diaphone models: the large "Type F", which created a tone of about 250 Hz, found worldwide use as a fog signal, especially in lighthouses. The mechanism of the diaphone ...

  9. Sailcloth - Wikipedia

    en.wikipedia.org/wiki/Sailcloth

    Sails made with synthetic fibers. Sailcloth is cloth used to make sails. It can be made of a variety of materials, including natural fibers such as flax, hemp, or cotton in various forms of sail canvas, and synthetic fibers such as nylon, polyester, aramids, and carbon fibers in various woven, spun, and molded textiles.

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