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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.
A designator flag is used to indicate if a flaghoist signal is meant to be interpreted as an ICS signal or as a naval signal. The U.S. Navy uses a set of 68 flags, including flags for each letter of the alphabet and each numeral to convey messages of tactical or administrative nature. [2] [better source needed]
Code numbers 1–25 represented letters of the alphabet (omitting J and with V=20 before U=21); [8] higher numbers were assigned meanings by a code book. [9] 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 ...
Despite the NATO sharing the same alphabetic flags as the International Code of Signals, the meanings are not shared between the codes. Furthermore, the NATO code uses a number of special flags which alter the meaning of the hoist. All below signals have been taken from a 2003 unclassified NATO codebook. [5]
The flag is also a symbol of exploration. It was planted on the moon during the first landing by Apollo 11 astronauts in 1969. The flag even has its own day -- each year Americans celebrate flag ...
The Z flag is a diagonally quartered square consisting of four isosceles triangles with their apexes meeting in the center of the square – a yellow triangle on the top, blue at the fly (right), red on the bottom, black at the hoist (left). It is the only flag in the international maritime flag set to use four colors.
For Pride month 2023, learn the significance of different LGBTQ flags, including the Gilbert Baker Pride Flag, Traditional Pride Flag, and Progress Pride Flag.