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After the Second World War, in 1948, the Royal Navy adopted a rationalised "pennant" number system where the flag superior indicated the basic type of ship as follows. "F" and "A" use two or three digits, "L" and "P" up to four. Again, pennant 13 is not used (for instance the helicopter carrier Ocean (L12) was followed by Albion (L14)).
At first it was used concurrently with the old system until 1 January 1902, and then used exclusively after 1 January 1903. In this new edition, the number of flags was increased from 18 flags plus a code pennant to 26 flags and a code pennant. The eight new flags represented the vowels A E I O U and the letters X Y Z. [2]
4) Sound signals. L Lima: Quarterly or and sable "Stop immediately." Latitude (the first 2 digits denote degrees; the last 2 denote minutes.) M Mike: Azure, a saltire argent "My vessel is stopped and making no way through the water." [b] N November: Chequy of sixteen azure and argent "Negative." [a] O Oscar: Per bend gules and or "Man overboard."
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 ...
The numeral 4: Some people leave the top "open": all the lines are either vertical or horizontal, as in a seven-segment display. This makes it easier to distinguish from the numeral 9 . Whether the horizontal bar terminates at or crosses the right vertical bar is insignificant in the West, but to be distinguished from certain Chinese characters ...
Commodore of the White first class (cross of St George on a white broad pennant 1826 to 1864) Commodore of the White second class (cross of St George with a red ball in the upper left canton on a white broad pennant 1864 to 1954) Commodore of the Blue second class all squadrons (plain blue broad pennant from 1826 to 1864)
In the U.S. Navy, the blue and white pennant will contain either numbers or letters indicating the command designation or name. For example, the pennant for the Commodore commanding Destroyer Squadron 25 (DESRON 25) will have the numeral "25" on the field of their command pennant.
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]