🇫🇷 Châteauneuf-sur-Isère, France

Châteauneuf-sur-Isère is a commune in the Drôme department of southeastern France. It has a population of approximately 4,500 people. While it is not a coastal city, it is located on the banks of the Isère River, which may be of interest to seafarers and shipowners for recreational activities such as boating and fishing. However, it does not have any ports, shipyards, or factories producing ship parts.