What british passanger liner was sunk by Germany off the coast of Ireland in ww1?

The British passenger liner sunk by Germany off the coast of Ireland during World War I was the RMS Lusitania. It was torpedoed by a German U-boat on May 7, 1915, leading to the deaths of 1,198 passengers and crew. The sinking caused international outrage and contributed to shifting public opinion in the United States against Germany.