This ship runs on the higher end of UnCruise Adventures' fleet, resembling a luxury yacht with attentive service and a cozy salon that's popular during cocktail hour. The 22-guest Safari Quest also escapes the beaten routes, darting into hard-to-reach places like Alaska's narrow inlets and bays. The real privileges are the up-close brushes with nature, experienced guides, and national park rangers, who often come on board to deliver talks.