Empress of Ireland was a British-built ocean liner that sank near the mouth of the Saint Lawrence River in Canada following a collision in thick fog with the Norwegian collier Storstad in the early hours of 29 May 1914. Although the ship was equipped with watertight compartments and, in the aftermath of the Titanic disaster two years earlier, carried more than enough lifeboats for all aboard, she foundered in only 14 minutes. Of the 1,477 people on board, 1,012 died, making it the worst peacetime maritime disaster in Canadian history.[1][2][3][a]

Fairfield Shipbuilding and Engineering built Empress of Ireland and her sister ship, Empress of Britain, at Govan on the Clyde in Scotland.[1] The liners were commissioned by Canadian Pacific Steamships or CPR for the North Atlantic route between Liverpool and Quebec City. The transcontinental CPR and its fleet of ocean liners constituted the company's self-proclaimed "World's Greatest Transportation System". Empress of Ireland had just begun her 96th voyage when she was lost.[4]

The wreck of Empress of Ireland lies in 40 m (130 ft) of water, making it accessible to advanced divers.[5] Many artifacts from the wreckage have been retrieved, some of which are on display in the Empress of Ireland Pavilion at the Site historique maritime de la Pointe-au-Père in Rimouski, Quebec, and at the Canadian Museum of Immigration at Pier 21 in Halifax, Nova Scotia. The Canadian government has passed legislation to protect the site.[6]
(Wikipedia)
Because the tragedy happened just before the first world war, it was forgotten in history. It is also because it was not the biggest ship of its time and was not on its first voyage and there were not famous people on board.
Here you can see some objects taken from the wreck.