In southern Chile, many communities are only accessible by sea. For example, according to the Wikipedia article on Villa Puerto Edén:
Owing to the large tidewater glaciers caused by the region’s super-high precipitation, it is only accessible by sea, on the Navimag ferry from Puerto Montt in the north, or Puerto Natales in the south.
However, the Navimag website has a comunicado oficial:
Me corresponde informarles que Navimag Ferries ha decidido redestinar el Ferry Evangelistas a un servicio de carga a contar del próximo mes de Septiembre. Por tal razón, se suspende el servicio de transporte de pasajeros en esta nave en la Ruta Fiordos (Puerto Natales – Puerto Montt ; – Puerto Montt – Puerto Natales).
Which basically means that the ferry is suspended. The aforementioned Wikipedia article does state that There is also a monthly boat from Caleta Tortel, but the source is offline (print book) I can't find details about this. The Spanish language article has no information about transportation. In conflict with Wikipedia, the Soviet Genshtab map (via topomapper.net) does show an airfield:
How can one get around in coastal southern Chile now that the Navimag Ferries are suspended?