Ключевые слова: aerial drone, black sea, bulgaria, cargo ship, coastline, commerce, commercial ship, container ship, cranes, export, freight, front view, global trade, harbor, import, industrial, industrial port, logistics, marine logistics, marine transport, maritime, maritime logistics, navigation, ocean freight, port, sea, seascape, shipping, shipping containers, shipping industry, shipping line, shipping route, shipping vessel, supply chain, trade, transport, transport vessel, varna, vessel,