Difference between revisions of "AY Honors/Communications/Semaphore Code"

Revision as of 02:19, 21 August 2008

The newer flag semaphore system uses two short poles with square flags, which a flagperson holds in different positions to signal letters of the alphabet and numbers. The flagperson holds one pole in each hand, and extends each arm in one of eight possible directions. Except for in the rest position, the flags cannot overlap. The flags are colored differently based on whether the signals are sent by sea or by land. At sea, the flags are colored red and yellow. While on land, they are red and white.

The following semaphore characters are presented as one would face the signalman (in other words, pretend you can see the signalman's face in the illustrations). The letters almost follow a perfect, regular pattern, but don't be fooled by the first several. J, V, and Y break the pattern. We present them here in alphabetical order, and then again by position in a series of circles.

Alphabetic Order

File:Semaphore Ready.svg Rest position	File:Semaphore Numeric.svg Numerals	File:Semaphore Error.svg Attention	File:Semaphore Cancel.svg Cancel
File:Semaphore Alpha.svg A / 1	File:Semaphore Bravo.svg B / 2	File:Semaphore Charlie.svg C / 3 / Ack	File:Semaphore Delta.svg D / 4	File:Semaphore Echo.svg E / 5 / Error 9x's	File:Semaphore Foxtrot.svg F / 6
80px G / 7	80px H / 8	80px I / 9	80px J / Letters	80px K / 0
80px L	80px M	80px N	80px O	80px P
80px Q	80px R	80px S	80px T	80px U
80px V	80px W	80px X	80px Y	80px Z

By position

The Grand Circle	File:Semaphore Alpha.svg A	File:Semaphore Bravo.svg B	File:Semaphore Charlie.svg C	File:Semaphore Delta.svg D	File:Semaphore Echo.svg E	File:Semaphore Foxtrot.svg F	80px G
A Circle	File:No work.svg	80px H	80px I	80px K	80px L	80px M	80px N
B Circle	File:No work.svg	File:No work.svg	80px O	80px P	80px Q	80px R	80px S
C Circle	File:No work.svg	File:No work.svg	File:No work.svg	80px T	80px U	80px Y	File:Semaphore Cancel.svg Cancel
D Circle	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	File:Semaphore Numeric.svg Numerals	80px J	80px V
E Circle	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	80px W	80px X
F Circle	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	File:No work.svg	80px Z

Tips

When you are first learning semaphores, a good Bible text to practice with is Philippians 4:8, as it repeats the phrase "whatever is" several times. Since it is so repetitive, You should be able to quickly signal the "whatever is" portion to get your speed up. This verse contains all the letters of the alphabet except j, q, and z which can be learned afterwards.

Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.
— Philippians 4:8 (NIV)

Graphically

File:Semaphore Foxtrot.svgF

60pxI

60pxN

File:Semaphore Alpha.svg
A

60pxL

60pxY

File:Semaphore Bravo.svgB

@@ Line 154: / Line 154: @@
 These four are made by holding the flags 45° apart:
 {{Semaphores|A|H|O|T}}
-Most of these are fairly common letters (except for ''X''), so knowing them will allow you to spell the better part of most words.  Add an ''S'' to the mix:
+Most of these are fairly common letters (except for ''X''), so knowing them will allow you to spell the better part of most words.  Add an ''A'' and an ''S'' to the mix:
-{{Semaphores|S}}
+{{Semaphores|A|S}}
 and you can spell a quick sentence:
 {{Semaphores|U|N|I|X|.|I|S|.}}
 {{Semaphores|A|.|H|O|T|R|O|D|.|O|S|.}}