Ключевые слова: atlantic, beacon, blue, buoy, coast, coastline, danger, europe, fluvial, guidance, light, lighthouse, lisbon, lonely, marine, maritime, mouth, nature, nautical, navigation, navy, nobody, ocean, outdoor, portugal, red, risk, river, sado, sailing, sea, seascape, seaside, setubal, shore, shoreline, signal, station, summer, sun, sunset, tide, travel, twilight, warning, water, wave, west, white, wild,