The HCMS Onandoga is a British built Oberon class diesel-electric submarine that was used by the Canadian Navy during the Cold War. The ship was commissioned in 1967 and decommissioned in 2000. It was moved to the present site and has been opened as a museum since 2009.
On the night of May 29, 1914, the RMS Empress of Ireland and the Norwegian collier Storstad collided in thick fog just off the coast from Pointe-au-Père (Father Point), near Rimouski, Quebec. The ship sank in about 14 minutes, taking 1012 passengers to their deaths at the bottom. This is a National Historic Site of Canada
It is the biggest peacetime loss-of-life inicident in Canadian history, with more people dying than on the sinking of the Titantic. With the opening of WWI just weeks away, the incident was overshadowed by these events and the sinking was soon forgotten.
The short theatre presentation is extremely well done and highly recommended!