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Specialists hydrographic service of the Leningrad naval base have replaced the entrance buoy to the North of the capital. It is located at the entrance to Kronstadt Korabelny fairway.

Ten-meter sea ice buoy weighs about five tons, reported the press service of the Western military district. This is the first in the world constantly exposed glowing floating navigation sign that warns the crew and civilian ships and military ships about the presence of danger and shows them the way. It acts since 1884.

holds three-ton Buoy anchor at a depth of 20 meters. The construction of year-round at night delivers six-second signal of white color.

Replace the buoy the crew of the hydrographic vessel GS-27. In addition, during the week the works involved the crews of ten ships and boats. And all the crews of boats and hydrographic ships of the Leningrad naval base was replaced and serviced more than 50 buoys. They are located on the state border of Russia, the Big and the Kronstadt ship fairway, in the Lomonosov channel.