The film tells about the work of specialists Hydrographic Service of the Navy.
Specialists serving beacons Baltic sea watching, working mechanisms, aids to navigation equipment to ensure safety of navigation.
Watch specialists lighthouse on an artificial island Colca.
View cliffs of the island of Hogland.
Monument to the inventor of the radio AS Popov.
Remote control radio beacon on the island of Hogland.
View stormy sea.
Team attendant vessel puts runaway light buoy in its place.
Key words
Landscapes.
Radio.
Maritime transport and road.