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Semaphore

Last modified: 2005-08-19 by antonio martins
Keywords: semaphore | oscar |
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About semaphore

“Flag language”, or “semaphore” — a convention to convey (latin) letters by means of two flaglets, held in each hand, and several positions of both arms. This is not a “language”, of course, rather an “alphabet” (the same way Morse or Braille are alphabets — they’re actually cyphers).
António Martins, 27 Jul 2003 and 07 May 2005

As a noun the word "semaphore" (from the Greek "σημια", "sign", and "φορος", "bearing") is the name given to the system of sending messages by holding the arms, two poles or two flags in certain positons according to an alphabetic code, or a mechanical device for signalling in the same way. As a verb it means «to signal in by these means». The person who does the “semaphoring” is a signaller.
Christopher Southworth, 27 Jul 2003

Nautical signal and semaphore flags, storm flags, I suggest, are a special sort of occasional flag
Bill Dunning, 29 Aug 2003

There is no symbolism on these semaphore “flags”, which may be a colored paddle.
Albert Kirsch, 31 Aug 2003

The actual flags used were (and are) entirely irrelevant to the system.
Christopher Southworth, 27 Jul 2003

What gives semaphore flags content is not their design at all, but rather their position! A signalman without flags could still just wave his arms and get his message across; the “flags” just add visibility.
Albert Kirsch, 29 Aug 2003


Flags used in semaphore

Question: What colour flag should I use for semaphore signalling.
Answer: The design is irrelevant.
Dean McGee, 28 Jul 2003

Did the Armies of the various countries in Europe and the USA use different and distinctive patterns for the semaphore flags of their artillery corps? At the Suffolk Regimental Museum in Bury-St Edmunds, in Britain, former colleague of mine was shown a flag picked up by a member of the regiment on the battlefield of Paardeberg (Feb 17 to Feb 27 1900 - Anglo-Boer War): It was a square red flag with a white square at the centre. At the Artillwry section of the War Museum of the Boer Republics in Bloemfontein, South Africa, former capital of the Orange Free state Republic, the curator identified it as a semaphore flag of the OFS State Artillery. He also told me that the same design was the used by the British Royal Artillery. He had another semaphore flag, white with a narrow blue cross, in his collection which was used for semaphore signalling by the ZAR (Transvaal) State Artillery. This was apparently the pattern used by the German Army’s artillery corps.
Andre Burgers, 04 Apr 2005

US Army used red with a white rectangle (when signaling with a light colored background behind the sender) or
white with a red rectangle (when the background was dark). US Navy uses (still) the ICS OSCAR flag, divided diagonally yellow and red. I seem to recall that the [British] Royal Navy once used a horizontally triband, either white-blue-white or blue-white-blue depending on background, but may be mistaken.
Joe McMillan, 01 Jul 2003

In the South African Navy and, I believe the British Royal Navy and possibly also throughout NATO, the semaphore signal flags were square Flags OSCAR, presumably because the red and yellow diagonal design had high visibility at sea.
Andre Burgers, 28 Jul 2003

I had seen the red/white US Army flags in the 1917 Nat’l Geo [gmc17]. And I remembered seeing a badge from a Canadian Forces signal unit that included crossed blue/white flags. I found a couple of examples like this site in Canadian, Australian, and British Army units. The symbol is a white-blue-white triband crossed with a plain blue flag. And this site seems to show the plain blue flag in use in the Zulu war, 1879 (but the pic is small: it may be a regimental flag or some such).
Dean McGee, 01 Aug 2003


Usage of semaphore

From a book called The schoolboy’s Pocket Book by Carlton Wallace (first published in the 1950s):

Before a semaphore transmission begins, it is usual to hoist the letters VOX [victor oscar x-ray] or simply J [juliet] in the International Code flags from a convenient flagstaff.

The signaller then gives the Semaphore alphabetical sign (identical to the signal for the letter J) and waits until the person receiving the message replies with the letter C.

If numbers are to be sent, the signaller makes the numerical sign; he makes the alphabetical sign again when going back to ordinary letters.

When receiving, the signaller stands at the “ready” position with the two flags crossed in front of the legs.

James Dignan, 07 Jun 2005


Letter semaphore signals

AA BB CC DD EE FF GG HH II JJ KK LL MM NN OO PP QQ RR SS TT UU VV WW XX YY ZZ

«A» signal

A
by James Dignan, 12 Jun 2005

«B» signal

B
by James Dignan, 12 Jun 2005

«C» signal

C
by James Dignan, 12 Jun 2005

«D» signal

D
by James Dignan, 12 Jun 2005

The peace symbol originated from semaphore for "N" (the two diagonal lines) and "D" (the two vertical lines). Later the symbol was adopted as a general peace sign.
T.F. Mills, 09 Oct 1996

«E» signal

E
by James Dignan, 12 Jun 2005

«F» signal

F
by James Dignan, 12 Jun 2005

«G» signal

G
by James Dignan, 12 Jun 2005

«H» signal

H
by James Dignan, 12 Jun 2005

«I» signal

I
by James Dignan, 12 Jun 2005

«J» signal

J
by James Dignan, 12 Jun 2005

«K» signal

K
by James Dignan, 12 Jun 2005

Zero is the same combination as letter K.
James Dignan, 07 May 2005

«L» signal

L
by James Dignan, 12 Jun 2005

«M» signal

M
by James Dignan, 12 Jun 2005

«N» signal

N
by James Dignan, 12 Jun 2005

The peace symbol originated from semaphore for "N" (the two diagonal lines) and "D" (the two vertical lines). Later the symbol was adopted as a general peace sign.
T.F. Mills, 09 Oct 1996

«O» signal

O
by James Dignan, 12 Jun 2005

«P» signal

P
by James Dignan, 12 Jun 2005

«Q» signal

Q
by James Dignan, 12 Jun 2005

«R» signal

R
by James Dignan, 12 Jun 2005

«S» signal

S
by James Dignan, 12 Jun 2005

«T» signal

T
by James Dignan, 12 Jun 2005

«U» signal

U
by James Dignan, 12 Jun 2005

«V» signal

V
by James Dignan, 12 Jun 2005

«W» signal

W
by James Dignan, 12 Jun 2005

«X» signal

X
by James Dignan, 12 Jun 2005

«Y» signal

Y
by James Dignan, 12 Jun 2005

«Z» signal

Z
by James Dignan, 12 Jun 2005

Digit semaphore signals

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