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| Historical Lighthouses |
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HOŞKÖY LIGHTHOUSE |
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This lighthouse assists the vessels navigating in the Marmara sea to find their route of way. It was constructed Ottoman Empire period in 1861 by the French constructor
Hoşköy is situated near the Mürefte region. Its former name was the "Hora Lighthouse." Tower is constructed out of iron sheet and girders originally brought over from France, and it bears its original structure in our days.
It has been constructed 50 meters above the sea level and tower height at 20 meters.
The visual sight distance of the lighthouse, in which has the flashing character of Gp.Fl. W. (2) 10 sec with red sector, is 19 nautical miles.
Oil lamp has primarily been used and then high intense filament lamps work with LPCo as a light source and it is currently provided an illumination with the electric lamp of 1000 W.
In order to be seen from the long distance by strengthen the light source, three pieces cotodiyoptric cylinder lenses which has optical distance of 375 mm as a optic system has been used.
Triangle optical panels had placed on circular platform which float on bath of mercury. Fixed light source illuminates on focus and when the optic is rotated on the platform it will give out flashes during the period of rotation.
It has weight that move vertically down on steel wires in the tower. As the weight falls, so the clock is driven and when the weight reaches the bottom, the clock stops unless the weight is wound back up to the top of its travel. So the lighthouse keepers had to wind up their lighthouse optic clock with a large winding handle attached to the mechanism that was located immediately below the optical system. This is look like clockwork mechanism at houses. Lighthouse keeper still winds mechanism at every third hour.
Above mentioned mechanism and optical panels has been under protection and still using in service. Lighthouse and guardian house is being under protection as national heritage by General Directorate of Coastal Safety and Salvage Administrations.
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