G
Geoff
- Jan 1, 1970
- 0
They are nothing like semaphone.
Crap. Semaphore spells out the message letter
by letter, like morse does, but using arms/flags etc.
Signal flags are nothing like semaphore
either and are still used to some extent.
Actually, landing signals are NOT flag signals. Like semaphore, they MAY
use flags, or even lights, but that is for convenience, not meaning.
I DO know what semaphore is, as I do know what landing signals are,
something that you obviously do not. Please do not confuse either with
the international code of signals, which is a letter code, using one, two
or three letters to convey a meaning. These letters may be passed by
morse (sound or light signalling), semaphore or by international code
flags.
Semaphore signals are given here :
<http://www.anbg.gov.au/flags/semaphore.html>
Landing signals : <http://www.fedpubs.com/subject/boat/life_saving.htm>
The international code of signals (Flags):
<http://flagspot.net/flags/flagicsa.html> et al
The International code of signals (meanings):
<http://pollux.nss.nima.mil/pubs/pubs_j_show_sections.html?
dpath=ICOS&ptid=7&rid=1466>
The above are international in meaning. Various navies had (still have?)
their own private codes, hence the "international code" flag.
In semaphore, a particular arm (or flag) position, indicates a certain
character, in landing signals, which incidentally are nothing to do with
aircraft, a certain arm (or flag) position indicates a defined meaning.
You may also wish to know that morse code may be sent by flag, in a
similar manner to semaphore. However, semaphore is the more efficient
code requiring only one flag movement, whereas morse will typically
require several flag movements.
YG