The ferry PILCHERO sails regular on General Carrera Lake from Chile Chici, to Puerto Ingeniero Ibanez, in the Chilean sector of the lake
Not any details I can find on the ferry, from the photo and the stamp she looks that she is a ro-ro ferry with a bow-ramp.
The voyage between the two places takes at least 3 hours
Lake General Carrera under this name is known in Chile; in Argentina it named Lake Buenos Aires, is located in Patagonia with a surface area of 1,850 km².
Chile 1989 50p sg1239, scott847.
Source Wikipedia.