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  2. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The International Code of Signals (INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist , signal lamp ("blinker"), flag semaphore , radiotelegraphy, and radiotelephony.

  3. Flag signals - Wikipedia

    en.wikipedia.org/wiki/Flag_signals

    Flag signals can mean any of various methods of using flags or pennants to send signals. Flags may have individual significance as signals, or two or more flags may be manipulated so that their relative positions convey symbols. Flag signals allowed communication at a distance before the invention of radio and are still used especially in ...

  4. Bravo Zulu - Wikipedia

    en.wikipedia.org/wiki/Bravo_Zulu

    A Canadian ship flying 'Bravo Zulu'. According to the U.S. Navy "Navy Data" reference website: "The term BRAVO ZULU originates from the Allied Tactical Publication 1 (ATP 1), [2] an Allied military maritime tactical signals publication, which in the aggregate is For Official Use Only (FOUO), now known in the U.S. Department of Defense as Controlled Unclassified Information (CUI), and can also ...

  5. Naval flag signalling - Wikipedia

    en.wikipedia.org/wiki/Naval_flag_signalling

    Naval flag signalling undoubtedly developed in antiquity in order to coordinate naval action of multiple vessels. In the Peloponnesian War (431 – 401 BCE) squadrons of Athenian galleys were described by Thucydides as engaging in coordinated maneuvers which would have required some kind of communication; [1] there is no record of how such communication was done but flags would have been the ...

  6. International maritime signal flags - Wikipedia

    en.wikipedia.org/wiki/International_maritime...

    Two sailing ships dressed overall with their signal flags. International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. [1] Various navies have flag systems with additional flags and codes, and other flags are used in special uses ...

  7. Flag semaphore - Wikipedia

    en.wikipedia.org/wiki/Flag_semaphore

    A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005). Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and - φέρω (-phero) '-bearer' [1]) is a semaphore system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.

  8. Military communications - Wikipedia

    en.wikipedia.org/wiki/Military_communications

    Military communications span from pre-history to the present. The earliest military communications were delivered by runners. Later, communications progressed to visual signals. For example, Naval ships would use flag signaling to communicate from ship to ship.

  9. Wigwag (flag signals) - Wikipedia

    en.wikipedia.org/wiki/Wigwag_(flag_signals)

    Wigwag flags, wigwag torches and kerosene canteen, and a signal rocket. Wigwag (more formally, aerial telegraphy) is an historical form of flag signaling that passes messages by waving a single flag.