The Sinking of the Lusitania

She was the fastest passenger liner left on the Atlantic, and she had made the crossing from New York to Liverpool two hundred times before. On her 202nd voyage, eleven miles off the Irish coast, a single torpedo sent her to the bottom in eighteen minutes. Of the 1,960 people aboard, only 763 survived. Among the dead were 128 Americans — and their deaths would help pull the United States into a war it had spent nearly a year trying to avoid.

A Liner Built for War, Sailing in Peace

RMS Lusitania had never really been just a passenger ship. The British government had subsidized her construction on the understanding that she could be converted into an armed merchant cruiser if war came. Her design included pillars and supports meant to carry a dozen 6-inch guns, and naval reference books of the era listed her accordingly — Jane’s Fighting Ships identified her silhouette alongside other fast liners for recognition purposes, while Brassey’s Naval Annual simply called her a “Royal Naval Reserved Merchant Cruiser.”

When war broke out in 1914, the Admiralty briefly considered requisitioning her for that role, then changed course. Ships like Lusitania burned through nearly 38 tons of coal an hour — too costly to justify when smaller cruisers could do the job, and too recognizable to be useful undercover. So she stayed in civilian service, repainted in wartime grey for her first eastbound crossing before reverting to her ordinary Cunard colors once the German naval threat seemed to have evaporated. Bookings were thin that winter, prompting Cunard to shut down one of her boiler rooms to save money — a decision that cut her top speed from over 25 knots to 21. Even reduced, she remained the fastest liner still operating.

Germany Draws a Line in the Water

Britain had imposed a naval blockade on Germany from the war’s outset, steadily expanding its list of contraband goods to include food. Germany answered in kind, but with a new and largely untested weapon. In February 1915, the German Admiralty declared the waters around the British Isles a war zone: from the 18th of that month, Allied ships there could be sunk without warning. Officials insisted efforts would still be made to spare neutral vessels — but secretly, naval staff instructed U-boat commanders to target passenger ships specifically, believing it would frighten other shipping away from British ports. Germany had only 21 submarines when the campaign began, many not even seaworthy, so few outside the Admiralty took the threat seriously at first. The American government warned Berlin it would face “strict accountability” for any U.S. deaths that resulted.

Lusitania herself sailed through the opening weeks of this new policy largely unprotected. On one crossing, American passengers nervously asked Captain Daniel Dow to fly the U.S. flag to ward off attack — a request that caused a diplomatic uproar once word got out. On another voyage, despite a shortage of destroyers, the Admiralty sent two warships and a disguised Q-ship to escort her into Liverpool Bay. But naval and merchant vessels didn’t share radio codes, so when the escorts tried to contact Lusitania, Captain Dow — wary of broadcasting his real position over an open channel — gave a false one. The warships never found her. She reached Liverpool alone.

Through the spring, the danger sharpened. In late March, a U-boat gave the British liner Falaba only about ten minutes’ warning before torpedoing her, killing the first American to die in the war. Within German command, Admiral Gustav Bachmann argued that the submarine campaign was only killing a handful of ships and would never work unless U-boats stopped bothering to check a vessel’s identity before attacking. With encouragement from Admiral Tirpitz, the Kaiser secretly discouraged commanders from surfacing before an attack — creating, as one historian put it, “an operational twilight zone” where mistakes were more likely. Attacks on two more American vessels followed in late April and early May. President Wilson had responded to none of it by the time the Lusitania sailed into the center of the story.

A Warning Published, a Warning Ignored

Dow, worn down by months of operating in the war zone, left his post; Cunard later said he was “tired and really ill.” His replacement, Captain William Thomas Turner, was an experienced hand who had previously commanded Lusitania, Mauretania, and Aquitania. Under Turner, the ship left Liverpool on 17 April 1915 for New York, arriving a week later for what would be her final return crossing.

Before she sailed home, German ambassador Johann Heinrich von Bernstorff — who had doubts about the legality of the submarine campaign and worried Americans weren’t taking the danger seriously — arranged for a formal notice to run in fifty American newspapers. It reminded travelers that a state of war existed, that the waters around the British Isles were a declared war zone, and that ships flying the British flag were liable to destruction there. The warning ran in New York papers alongside advertisements for Lusitania’s own sailing. Passengers had been told, in black and white, what they might be risking.

The Attack

Lusitania’s final voyage carried more than passengers. In her hold sat roughly 173 tons of war supplies: 4.2 million rounds of rifle ammunition, close to 5,000 shrapnel-filled artillery shell casings, and 3,240 brass percussion fuses. She was still, first and foremost, a passenger vessel — but she was not sailing empty-handed into a war zone.

On 7 May 1915, about eleven nautical miles off the Old Head of Kinsale, the German submarine U-20, commanded by Kapitänleutnant Walther Schwieger, spotted her. From a submerged position 700 metres off her starboard side, Schwieger fired a single torpedo. It struck home, and moments later a second explosion tore through the ship from within. Whatever caused it, the result was devastating: Lusitania went down in just eighteen minutes, far too fast for an orderly evacuation. Only 763 of the 1,960 people aboard survived.

The sinking landed like a shockwave. News of the dead — including 128 Americans — turned public opinion across many countries sharply against Germany. In the United States, images of the stricken liner became fixtures of propaganda posters and recruitment campaigns, feeding a current of outrage that would, almost two years later, help carry America into the war on 6 April 1917.

The Fight Over the Truth

The sinking was barely over before the arguing began. Official investigations in both Britain and the United States — including a wreck inquiry convened by the British Board of Trade — were shaped as much by wartime secrecy and a deliberate campaign to pin full blame on Germany as by any dispassionate search for facts. The presence of war munitions in the ship’s hold, downplayed at the time, became a point of lasting controversy once it was acknowledged.

A theory has circulated for decades that the British government, with Winston Churchill personally involved, knowingly exposed Lusitania to danger in order to provoke a German attack and drag the United States into the war. Mainstream historians reject this reading. They describe the sinking instead as the product of British missteps and sheer bad luck, colliding with a German policy already primed to treat passenger ships as fair targets. Claims of deliberate British sabotage, these historians note, tend to rest on thin or fabricated evidence rather than anything solid.

What we still don’t know

The cause of that second explosion inside Lusitania’s hull has never been fully settled — contemporary investigators, hampered by wartime secrecy and a one-sided propaganda effort, never nailed it down, and debate about it continued long after the war. The broader argument over whether the ship was knowingly put at risk by British authorities to draw America into the conflict has never fully died out either, even though the historical mainstream firmly rejects it. What is clear is narrower and starker: a warned public, a declared war zone, a single torpedo, and eighteen minutes that helped reshape American opinion about the war in Europe.

Sources

– This article is adapted from the Wikipedia article Sinking of RMS Lusitania (en.wikipedia.org/wiki/Sinking_of_RMS_Lusitania), by Wikipedia contributors, used under the Creative Commons Attribution-ShareAlike 4.0 licence (creativecommons.org/licenses/by-sa/4.0/). We rewrote and edited the text. The material adapted from Wikipedia is available under the same licence. Readers wanting primary sources should follow that article’s reference list.