🇵🇹 Rio Tinto, Portugal

Rio Tinto is a city located in Portugal. It has a population of around 50,000 people. Although it is not a major seaport, it is located near the Douro River, which is navigable and connects to the Atlantic Ocean. This makes it potentially of interest to seafarers and shipowners who may need access to the river for transportation purposes. However, there are no notable shipyards or factories producing ship parts in the city.