fog signal

any of various types of signal used as a warning by vessels navigating in fog or mist.
[1750-60]

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      sound or light signal emitted in fog or mist by lighthouses and buoys to indicate a shoreline, channel, or dangerous stretch of water and by vessels to indicate their position. Each signal has a distinctive code. All vessels, whether stationary or moving, are required by law to utilize fog signals in inclement weather; the type, number, length, and timing of the signal indicate the size of the vessel and its position. The nature and application of fog warnings is codified in the International Regulations for Preventing Collisions at Sea (commonly called International Rules of the Road), applicable to all international waters. The earliest sound signals were made by bells, gongs, and explosives; these largely have been replaced by foghorns powered by compressed air or electricity. See also lighthouse.

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Universalium. 2010.

Look at other dictionaries:

  • fog signal — n. a loud low warning sound that can be heard by fog bound ships; a foghorn. Syn: foghorn. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • fog signal — any of various types of signal used as a warning by vessels navigating in fog or mist. [1750 60] * * * fog signal noun A detonating cap or other audible warning used in fog • • • Main Entry: ↑fog * * * fog signal, a bell, siren, horn, or other… …   Useful english dictionary

  • fog signal — /ˈfɒg sɪgnəl/ (say fog signuhl) noun any of various devices used as a warning by vehicles or vessels in fog …   Australian English dictionary

  • fog signal — noun a detonator placed on a railway line in fog to warn train drivers …   English new terms dictionary

  • fog-signal — …   Useful english dictionary

  • Fog signal station — A fog signal station is a station at which a fog signal exists, but at which there is no lighthouse. A light tower might be appended to the station at a later date, as happened at The Cuckolds Light in Maine. A number of these stations were… …   Wikipedia

  • Fog Sig. — • fog signal …   Maritime acronyms and abbreviations

  • signal — Synonyms and related words: ALGOL, COBOL, CRT spot, DM display, Doppler signal, EDP, FORTRAN, IF signal, IM display, RF echoes, Roman candle, Teletype, Wirephoto, aid to navigation, alarm, alert, alphabetic data, alphanumeric code, amber light,… …   Moby Thesaurus

  • fog — 1. n. & v. n. 1 a a thick cloud of water droplets or smoke suspended in the atmosphere at or near the earth s surface restricting or obscuring visibility. b obscurity in the atmosphere caused by this. 2 Photog. cloudiness on a developed negative… …   Useful english dictionary

  • fog —    Ohu, noe, ua noe, uhiwai.   See mist.   Also: awa, pāpala, pululuhi, pōhina, pūlawa.    ♦ Fog signal, ho ākaaka no ka pa a i ka noe …   English-Hawaiian dictionary

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