The Patea Explorer went up and down many of the arms of Doubtful Sound. Each arm had new and different views, like this awesome peak. January 5, 2016 700 × 467 The Patea Explorer went up and down many of the arms of Doubtful Sound. Each arm had new and different views, like this awesome peak. The Patea Explorer went up and down many of the arms of Doubtful Sound. Each arm had new and different views, like this awesome peak.