The boat, designed in a contemporary tone by British architect Ken Freivokh, fits up to 12 guests in five lower-deck staterooms and one upper-deck VIP cabin.
Half-asleep, I shuffled to the canopy-level observation deck of my rustic wooden cabin, grabbing binoculars and Tito Narosky's "Birds of Argentina and Uruguay" just as a flurry of yellow plumage transformed into what locals term the "banana toucan, " a rare and striking saffron toucanet.