The staff also had a cellar and a small vegetable garden. Two accommodations were provided for the lookout, his assistant and their entire family because the watch had to be kept 24 hours a day and sometimes the wives even participated in the service.
SUBJECT OF SEMAPHOR WINDOWS
The watch room, the largest, had five windows overlooking the sea.
SUBJECT OF SEMAPHOR CODE
In 1860, the Admiralty of Brest decided that each semaphore would be designed on a T-shaped plan to house both personnel and functional equipment: International Code flags and flames, weather equipment, telegraph, spare halyards and pulleys, ammunition for the canon, and miscellaneous equipment for 20 men in case of mobilization. Most of those located on the coast replaced former guard houses dating back to king Louis XIV. It was Napoleon who, in 1806, decided to build the semaphore rosaries. Hat a Dupillon message will be sent to them. On the left we can see the canon intended to warn the ships Postcard representing the semaphore of Kerhoazoc in the 1930s.Ī radio antenna is installed on the left on the terrace He also equipped the semaphores, but until walrus communications were made by radio, called from TSF ( Wireless Telegraphy), the four-armed Dupillon mast was retained in addition to the usual set of flames and flags for communicating with ships. In a short time the "electric telegraph", thanks to a cable, replaced the aerial one. It was in 1845 that the American Samuel Morse invented both his alphabet of dots and dashes and his handheld manipulator capable of sending short and long electrical signals. The semaphore of Kerhoazoc could also be connected with the semaphore of Ushant or Aber Wrac'h.
Via Le Minou and Portzic, they communicated with the Maritime Prefecture of Brest. To the south followed the semaphores of Porspoder, Corsen in Plouarzel, Les Renards in Le Conquet, Saint-Mathieu and Bertheaume in Plougonvelin, not to mention that of the island of Molène 2. In the Iroise Country, the one from Kerhoazoc to Landunvez was the most northerly. Observers could thus, from the coast, quickly send their observations to the Maritime Prefecture or the latter could send orders to the remaining warships in sight, after a warning cannon shot launched by the semaphore. The numbers displayed corresponded to entire sentences in lexicons.
SUBJECT OF SEMAPHOR INSTALL
The parallelism between the indicators and the control arrows of the winchĬlaude Chappe's invention was quickly perfected by Charles Pillon ( or Dupillon 1) then applied to the Navy by Louis Jacob in order to install along the French coast a whole series of semaphores equipped with 4 articulated arms. Supports two articulated arms, the indicators. Different systems allowed them to be encrypted. In the other direction, orders could be transmitted to the armies much faster than on horseback. Each station recopying the signals of the previous one located about 7 km away, this system enabled the Parliament called "Convention", in 1794, to learn in less than an hour of the french victory of Condé-sur-Escaut over the Austrian army. Decided in 1793, a first line of these semaphores was installed between Lille and Paris. Using signals on a mast equipped with articulated arms and read with a telescope, it was sufficient to transmit two numbers, the first for the page, the second for the word number. This young engineer developed with his brothers a system he called "telegraph" that allowed him to transmit by signs from one point to another 92 numbers referring to a 92-page lexicon, each containing 92 numbered words. When we talk about semaphore, we obviously think of Claude Chappe's invention during the French Revolution. The ruins are on the right in the moor, behind a coastal mark whose base has been tagged. At the top of a hill, we discover a magnificent maritime panorama. At a crossroads located 1.5 km further, turn left onto the D137 signposted "KERSAINT par la route touristique". Leave St-Renan by the road to Ploudalmézeau (D68) and continue straight to the sea at Argenton. The ruins of this former semaphore can be seen from the Landunvez tourist road (D137).
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