Re: ???

[rspier@speed.seas.upenn.edu (Encyclopedia Britannica)]

>>>>> "SE" == Spyder's Empire <proprietor@spydersempire.com> writes:
SE> semaphores ?

http://www.britannica.com/bcom/eb/article/5/0,5716,68425+1+66703,00.html

 semaphore 

 method of visual signaling, usually by means of flags or
lights. Before the invention of the telegraph, semaphore signaling
from high towers was used to transmit messages between distant
points. One such system was developed by Claude Chappe in France in
1794, employing a set of arms that pivoted on a post; the arms were
mounted on towers spaced 5 to 10 miles (8 to 16 km) apart. Messages
were read by telescopic sightings. Modern semaphores included
 movable arms or rows of lights simulating arms, displayed from towers
and used to signal railroad trains. Semaphore signaling between ships,
now largely abandoned, was accomplished by persons who held a small
flag in each hand and, with arms extended, moved them to different
angles to indicate letters of the alphabet or numbers.

http://search.britannica.com/bcom/search/results/1,5843,,00.html?p_query0=semaphore%20flag

http://155.187.10.12/flags/signal-meaning.html 
Meanings of International Maritime Signal Flags



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