The ferry leaves Puerto Montt, and sails through the quiet waters of the Ancud Gulf, protected by the numerous islands of the Chiloé's Archipelago. After crossing the Moraleda Channel, the boat sails through the Penas Gulf, the only part of the journey at open seas. After some hours, the navigation continues through protected channels. The journey goes through the channels White, Sarmiento and Concepción, arriving on the morning of the 4th day in Puerto Natales.
During the high season ther is a stop at Puerto Edén, to disembark local passengers and let the tourists have an idea of the living conditions of the people that live in this remote area. The boats also take a detour to the glacier Pío XI on the way south and to the Amalia o nt he way north (without disembarking)
For a detailled description of the southwards trip:
For a detailled description of the northwards trip:

Navimag (Naviera Magallanes) has two boats that transport vehicles, cargo and passengers. Both have cabins of different categories, and also berths in a common area. The ships have wide rooms like halls, restaurant and panoramic decks.
During autumn and winter, this route is made by the ferry Puerto Edén, and in spring and summer by the Evangelistas (ex Magallanes).