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in nine languages. 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
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, or have historical significance.
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.
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 ...
Flag semaphore signalling uses two flags, held in specific positions to signify letters. This method requires simple equipment but can be obscured by bad weather. This method requires simple equipment but can be obscured by bad weather.
From 1803 on, the French also used the 3-arm Depillon semaphore at coastal locations to provide warning of British incursions. [1] English military engineer William Congreve observed that at the Battle of Vervik of 1793 French commanders directed their forces by using the sails of a prominent local windmill as an improvised signal station. Two ...
A list of English Men of War. A list of foreign Men of War. A list of the English Merchant Vessels (from Lloyd's List). A list of Lighthouses, Ports, Headlands, Rocks, Shoals, Reefs &c. A selection of Sentences. The Vocabulary. Different flags indicated which list was referred to.
sem1 - Semaphore flag image file link. sem2 optional - Second semaphore flag image file link, for multi-flag semaphore systems. sem3 optional - Third semaphore flag image file link, for multi-flag semaphore systems. sign_img - Sign language manual alphabet image file link. sign_img2 optional - Second sign language manual alphabet image file link.