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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.
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.
The rank flag or distinguishing flag is the flag worn by a superior officer on their flagship or headquarters (hence the term flagship). The origins of this are from the era before radiotelegraphy and radiotelephony, when orders were given by flag signals. The flag denotes the ship which must be watched for signals designating orders. Such ...
Download QR code; Print/export ... The list of sail emblems consists of sail emblems and their class description. ... White Number on a dark red sail Rhodes 19:
The code numbers typically would have been hoisted on the mizzenmast, one after another, preceded by the "telegraphic flag" (a red over white diagonally-split flag) [10] to show that the subsequent signals would employ the Popham code. [11] As well as digit flags, the code used "repeat" flags so that only one set of digits was needed; thus the ...
This is a list of sail codes for sailing yachts and the old codes, used until 2000 by the International Sailing Federation. Mainsail Country Codes must comply with World Sailing Racing Rules of Sailing. ISAF Rules of Sailing Appendix G1.2 specifies that national letters shall be clearly legible and of the same color. [1] They must be placed ...
The flags measured two, four, or six feet (60, 120 or 180 cm) square and were generally either red or black banners with white square centers or white banners with red square centers. [7] The disks were 12 to 18 inches (30 to 46 cm) in diameter and were made of metal or wood frames with canvas surfaces.
The meanings of the shapes are defined by the International Regulations for Preventing Collisions at Sea (ColRegs). Day shapes from ColRegs Day shapes are black in color and their sizes are determined by the ColRegs; for example, the size of the ball is not less than 0.6 metres (2.0 ft).