
Last modified: 2025-01-18 by peter hans van den muijzenberg
Keywords: international code of signals | signal flags | maritime signal flags | 
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The site "Internationella flagg-
  och morsealfabetet" shows a few signal flags not in our current set. These
  are also identified at a Swedish scout page.
  Phil Nelson, 21 August 2000 
On http://lingvo.org/flagoj/ are proposed Esperanto Extensions to the International Code of Signals.
They are just like the normal C, G, H, J, S and U, but with Esperanto's colour
  green instead of the white parts to represent the same letters with circumflexes.
  Gabriel Beecham, 14 April 2004 
Signal flags like this are not used at sea anymore. So have these Esperanto 
letter flags ever been in use or are they just an idea?
I have asked about 
this to every Esperanto-speaking boat owners I ever met. Only two (one Danish 
and one Portuguese) knew about these special letter signal flags, and neither 
owns a set. They all agree that these flags, special or regular, are seldom used 
these days, that when they are used it is for cypher messages (using mostly 
single flags or pairs, some times more), not free text (which I suppose we 
already knew), and when free text is composed with these flags, in any language, 
due to lack of space on the lines and/or lack of enough flags, it is heavily 
abbreviated, like SMS textese in the 1990s.
Special separate flags for 
Esperanto text seem to be an unpopular idea as it would be an additional expense 
(and storage room use) for very little gain and rare use. This context, along 
with things like smoke signals in Morse code, would be the last redoubt of 
“7-bit” pre-Unicode surogate letter conventions most non-English users of 
telegraph and other early communication systems resorted to, including 
Esperanto-
speakers.
António Martins-Tuválkin, 5 December 
2024