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Signal Flags
Signals & Semaphor These are a system of flags, one for each letter of the alphabet, used to communicate at sea. Officially known as the "International Code of Signals", they were established in 1901, evolving out of earlier British signal systems such as Marryat's Code (1817) and the Commercial Code (1857). Slightly revised over the years, they are recognized by all nations and still play an important role in naval and merchant shipping.

Show Me the Signal Flags!

Show Me the Semaphore Code!


SIGNALS HOISTED ON CSS ACADIA: On most days, museum interpreter Derek Harrison hoists a variety of signals from Acadia's signal halyards, using the International Code of Signal flags to send messages to passing ships about weather, harbour movements and historical events.

Acadia also flies a variety of special flags reflecting her history such as the Maritime Museum pennant and the flag of the Canadian Hydrographic Service, the Canadian chart makers who built and operated Acadia from 1913 to 1969. On special days Acadia is "dressed", flying long strings of signal flags randomly arranged, to decorate the ship.


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Last updated 25 May, 2009 - RSM.