<Li> 1,198 of the 1,959 people aboard killed, leaving 761 survivors . </Li> <Li> Turned international opinion against Germany . </Li> <P> The sinking of the Cunard ocean liner RMS Lusitania occurred on Friday, 7 May 1915 during the First World War, as Germany waged submarine warfare against the United Kingdom which had implemented a naval blockade of Germany . The ship was identified and torpedoed by the German U-boat U-20 and sank in 18 minutes . The vessel went down 11 miles (18 km) off the Old Head of Kinsale, Ireland, killing 1,198 and leaving 761 survivors . The sinking turned public opinion in many countries against Germany, contributed to the American entry into World War I and became an iconic symbol in military recruiting campaigns of why the war was being fought . </P> <P> Lusitania had the misfortune to fall victim to torpedo attack relatively early in the First World War, before tactics for evading submarines were properly implemented or understood . The contemporary investigations in both the UK and the United States into the precise causes of the ship's loss were obstructed by the needs of wartime secrecy and a propaganda campaign to ensure all blame fell upon Germany . Argument over whether the ship was a legitimate military target raged back and forth throughout the war as both sides made misleading claims about the ship . Before Lusitania sailed, the German embassy had placed warnings in American newspapers that the ship would be targeted as it was carrying war munitions . At the time she was sunk, she was carrying over 4 million rounds of small - arms ammunition (. 303 caliber), almost 5,000 shrapnel shell casings (for a total of some 50 tons), and 3,240 brass percussion fuses, in addition to 1,266 passengers and a crew of 696 . Several attempts have been made over the years since the sinking to dive to the wreck seeking information about precisely how the ship sank, and argument continues to the present day . </P>

Why was the sinking of the lusitania important to ww1