Ключевые слова: background, beach, blue, blue sea, blue sky, blue sky and white clouds, boat, city, cloud, coastal, coastline, condiment, cruise ship, ferry, historical evolution, liugong island, maritime transport, metropolis, nature, navigation, ocean, passenger liner, pier, port, reef, sail, sailing, sea, sea view, seaside, ship, shipping, summer, tourism, transport, vessel, waterfront building, white clouds,