There is an international code system
when two ships decide to communicate with each other. This can also
mean that a ship wants to signal the other in case of an emergency.
These codes are nothing but nautical flags or marine
signal flags. These
flags can be used alone or in combinations with other flags.
Marine signal flags are made up of 26
square flags which are the various letters of the English alphabet
along with 10 numbered pendants. Since flags can interact mostly at
sea, for easy recognition, a combination of colors such as red and
white, blue and white and, black and white are used.
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Since these flags are used to
communicate so, it is essential to have knowledge on the various
flags and their signals.
1. One-flag signals are used for as an
urgent signal
2. Two-flag signals are used at times
of distress and maneuvering.
3. Three flags are used for point of
the compass, standard times, and also general code and decode
signals.
4. Four-flag signals are used as
geographical signals.
5. The five flags are used to relate
time and position.
6. Six and seven flags are used to
indicate latitude and longitude directions.
Few international meaning for marine signal flags:
* A: Alpha - Diver down; keep clear
* B: Bravo - Carrying dangerous cargo
* C: Charlie - Yes
* I: India - I am altering course to
port
* O: Oscar - Man overboard
* Z: Zulu – I require a tug
In case you are interested to purchase
these flags as a hobbyist collector or to use it on a ship, there are
a few on-line stores which can cater to your needs. These stores can
also provide you information on the marine industry.