This ship runs on the higher end of Un-Cruise Adventures's fleet, resembling a luxury yacht with attentive service and a cozy salon that's popular during cocktail hour. The 22-passenger 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.