CPAC Special The Hunt for Investigator: History and Canada’s Claim on the Arctic HMS Investigator was searching for the Northwest Passage and the missing Franklin expedition when she sank 155 years ago. The ship's historic importance, plus Canada's renewed focus on Arctic sovereignty, led to a Parks Canada archaeological mission that made worldwide headlines in July 2010 after finding the sunken wreck off Banks Island in the Northwest Territories. Veteran journalist Don Martin and CPAC's documentary crew were given exclusive access as they and Environment Minister Jim Prentice joined the expedition at Mercy Bay, recording breathtaking panoramas from the land, sea and air along the way.