The sinking of the RMS Lusitania by a German U-boat on May 7, 1915, remains one of the most controversial and pivotal events of the First World War. This passenger liner, constructed by John Brown & Company in Clydebank, Scotland, was torpedoed without warning in the waters off the Old Head of Kinsale, Ireland, resulting in the loss of 1,198 lives, including 128 American citizens. The attack fundamentally altered the course of the war, transforming the submarine from a niche naval weapon into a symbol of unrestricted warfare and turning international opinion irrevocably against Imperial Germany.
The Strategic Context of Unrestricted Warfare
To understand the rationale behind the attack, one must look at the strategic landscape of 1915. Germany had implemented the U-boat campaign primarily as a counter to the British Royal Navy's overwhelming surface fleet advantage. The British had imposed a naval blockade that was strangling German imports of food and raw materials. In response, Germany declared the waters around the British Isles a war zone, arguing that any ship traveling in those areas was a legitimate target due to the threat they posed as potential carriers of contraband. This policy, known as "unrestricted submarine warfare," was a desperate gamble to cut Britain's supply lines and force a conclusion to the conflict before the massive American army could be fully mobilized.
The Specifications of the SM U-20
The vessel responsible for the disaster was SM U-20, a Type U 19 submarine commissioned by the Imperial German Navy. These submarines were state-of-the-art for their time, designed specifically for long-range operations. U-20 measured 64.7 meters in length and displaced nearly 700 tonnes when submerged. Its diesel engines allowed for a surface speed of up to 16 knots, while its electric motors provided a respectable 9 knots underwater. The submarine was armed with four torpedo tubes—two in the bow and two in the stern—carrying a total of seven torpedoes, making it a formidable predator in the deep.
The Fateful Voyage and the Torpedoing
On the afternoon of May 7, 1915, the Lusitania was approaching the southern coast of Ireland after a transatlantic crossing from New York. Aboard the U-20, commanded by Kapitänleutnant Walther Schwieger, the crew had received intelligence that British warships were operating in the area. At 2:12 PM, lookouts on the submarine spotted the massive silhouette of the Lusitania. Schwieger maneuvered into position and fired a single torpedo from a distance of roughly 700 meters. The explosion occurred on the starboard side near the forward cargo holds. A second, much larger explosion followed seconds later, likely caused by the ignition of high-explosive materials or coal dust in the cargo holds, which tore the liner open and led to its rapid sinking in just 18 minutes.
Immediate Aftermath and Global Outrage
The reaction to the sinking was immediate and explosive. While Germany celebrated the tactical success, the world recoiled in horror at the images of floating corpses and the tragic death of so many civilians, including women and children. The American public, in particular, was galvanized by the loss of life, and the phrase "Remember the Lusitania" became a powerful anti-German slogan. Diplomatic relations between Berlin and Washington became severely strained, with the United States issuing a series of strong protests that threatened to sever the neutral nation's ties with the Reich. The German government, wary of American intervention, temporarily halted unrestricted submarine warfare to appease Washington.
The Wreckage and Modern Investigation
The Discovery and Condition
More perspective on Lusitania u boat can make the topic easier to follow by connecting earlier points with a few simple takeaways.
