Yes, the most notable sinking in the history of BC Ferries occurred on March 22, 2006, when the Queen of the North sank off the coast of British Columbia. The vessel was on its way from Prince Rupert to Port Hardy when it struck Gil Island after failing to make a required course change. The ferry drifted for about an hour before sinking in 430 meters of water. Tragically, two passengers, Gerald Foisy and Shirley Rosette, went missing and were presumed drowned, as they were never found. The subsequent investigation revealed that the bridge crew had been distracted, leading to a criminal conviction for the fourth officer on watch. While there have been other groundings and collisions in the company's long history—including the Queen of Victoria collision in 1970—the sinking of the Queen of the North remains the "darkest day" in BC Ferries' history. It led to a massive overhaul of safety protocols and bridge management training that has kept the fleet significantly safer in the two decades since.