The Tragic Sinking Of USS Indianapolis: World War II's Worst Shark Attack

What Happened to the USS Indianapolis? A Story of Heroism and Horror

In the vast expanse of the Philippine Sea, a tragedy of almost unimaginable proportions unfolded in the final months of World War II. The story of the USS Indianapolis is a gut-wrenching chapter in naval history—a tale that combines the pinnacle of wartime service with catastrophic failure, immense human suffering, and a brutal encounter with nature that cemented its place as the site of the worst shark attack in history. Over 880 men perished, not just from enemy action, but from exposure, dehydration, and relentless shark attacks after four days and five nights in the open ocean. But who was the USS Indianapolis, and how did this proud warship meet such a horrific fate? This comprehensive account delves into the ship's distinguished service, its secret final mission, the sinking, the survivors' ordeal, the dramatic rescue, and the lasting legacy that continues to shape naval protocol and memory.

A Proud Warship: Launch and Early Service

From Keel to Commissioning: A Ship Born in the Treaty Era

The USS Indianapolis (CA-35) was laid down at Camden, New Jersey on March 31, 1930. She was launched in November 1931 and commissioned the following year at the Philadelphia Naval Yard. Her design and construction were heavily influenced by the limitations of the Washington Naval Treaty, which sought to prevent an arms race by capping capital ship tonnage. To comply with these demands without reducing firepower, ship designers like those at the New York Shipbuilding Corporation created the Portland-class heavy cruisers, of which Indianapolis was the second. These ships were fast, heavily armed with nine 8-inch guns, and represented American naval engineering prowess in the interwar period.

Flagship of Scouting Force One and Admiral Spruance

Launched in 1931, she quickly proved her worth. For eight years, the USS Indianapolis served as the flagship of the commander of Scouting Force 1, a vital role in the U.S. Navy's pre-war fleet exercises and readiness. Her most famed service began in 1943 when she became the flagship for Admiral Raymond Spruance. From 1943 to 1945, while he commanded the Fifth Fleet in major battles across the Pacific—including the pivotal battles of the Philippine Sea and Leyte Gulf—the Indianapolis was his command center. Her speed and reliability made her an ideal flagship, and she earned 10 battle stars for her World War II service before her fateful final voyage.

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The Final Mission: Secret Cargo and Catastrophic Vulnerability

Carrying the Components of the Atomic Bomb

In July 1945, after a overhaul, the USS Indianapolis received a top-secret mission of unparalleled importance. She was tasked with transporting critical components of the newly developed "Little Boy" atomic bomb from the naval ammunition depot at Mare Island, California, to the island of Tinian. The components—the uranium projectile and the target insert—were delivered safely to Tinian on July 26, 1945. The ship then proceeded independently to the U.S. Navy base at Guam, from where it was ordered to join the destroyer escort USS Cecil J. Doyle and sail to the Leyte Gulf in the Philippines to prepare for the anticipated invasion of Japan.

A Series of Unfortunate and Tragic Oversights

The journey to Leyte should have been routine, but a cascade of errors left the ship fatally vulnerable. First, a mid-ocean refueling was canceled due to a misunderstanding about a Japanese midget submarine report. Second, the ship was not cleared for arrival in Leyte on a specific date, and no one was expecting her. Third, and most critically, the USS Indianapolis was ordered to proceed unescorted. This was a direct violation of standard anti-submarine warfare doctrine in waters known to be prowled by Japanese submarines. The heavy cruiser, with a crew of 1,196 men, steamed alone through the dark Philippine Sea on the night of July 30, 1945.

The Torpedo Attack and Rapid Sinking

The Fatal Strike

At approximately 00:15 on July 30, 1945, the Japanese submarine I-58, commanded by Commander Mochitsura Hashimoto, spotted the USS Indianapolis. Hashimoto fired six Type 95 torpedoes. Two struck the cruiser's starboard side—one in the bow and one amidships. The explosions were devastating. The ship, loaded with fuel and ammunition, caught fire immediately. The USS Indianapolis listed heavily to starboard. Within just 12 minutes, the proud warship rolled over and sank into the deep waters of the Philippine Sea. There had been no time to send a distress signal, and no one knew she had gone down.

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Abandoning Ship in Chaos

The suddenness of the sinking left hundreds of men trapped below decks. Those who made it topside faced chaos, fire, and a sea of swirling fuel oil. Many died instantly from explosions, fire, or inhalation of toxic fumes. The survivors, numbering around 900 initially, found themselves in the open ocean with limited life rafts and life jackets. They were alone, miles from any shipping lane, with no one aware of their plight.

Four Days of Terror: The Worst Shark Attack in History

The Shark Onslaught Begins

The survivors' nightmare was only beginning. As the days passed under the scorching sun, sharks began to appear. Initially drawn by the noise and thrashing in the water, they soon became a relentless, predatory force. The species involved were likely oceanic whitetip sharks and tiger sharks, both known for their aggressive nature and willingness to attack humans. The sharks targeted the wounded first, but soon attacked anyone in the water. Survivors described being circled, bumped, and then pulled under in a terrifying feeding frenzy. Hundreds of survivors were killed by sharks during this period.

Enduring Four Days and Five Nights

The survivors faced a brutal triad of threats: sharks, dehydration, and exposure. With no fresh water, many resorted to drinking seawater, leading to severe saltwater poisoning. The sun baked them by day, and the cold chilled them by night. Saltwater sores developed and became infected. Constant vigilance was required to fend off shark attacks, often by kicking and screaming to deter them. The psychological toll was immense. As one survivor, L.D. Cox, later recounted, the ocean became a "floating cemetery" with bodies everywhere. The sheer number of shark attacks and the prolonged exposure make this event the worst shark attack in history.

The Daring Rescue: Against All Odds

The Pilot's Discovery

Miraculously, on the morning of August 2, 1945, a PV-1 Ventura patrol bomber on a routine mission, piloted by Lieutenant (j.g.) Wilbur "Chuck" Gwinn, spotted an oil slick and then, incredibly, a large group of men in the water. Gwinn and his crew initially thought they were Japanese survivors from a downed aircraft. As they circled, they saw the men waving and the horrific scene of sharks circling the groups. Gwinn immediately radioed his base on the island of Palau, reporting the discovery of "many men in the water."

Coordinating the Rescue

The message was received by Captain William J. "Jimmy" L. "Jimmy" at the seaplane base. He quickly dispatched a rescue mission, but the closest ship was the USS Cecil J. Doyle, a destroyer escort that had been part of the original planned escort for the Indianapolis. Under the command of Commander William N. "Bill" the Doyle raced to the coordinates. Meanwhile, Gwinn, low on fuel, dropped a life raft and supplies before returning to base. The Doyle arrived at the scene late in the afternoon of August 2. The rescue was a monumental effort. Crewmen threw lifelines, used cargo nets, and pulled survivors from the shark-infested water. The daring pilot Gwinn's discovery was the sole catalyst for the rescue; without his chance sighting, it is likely all remaining survivors would have perished.

The Aftermath: Scandal, Exoneration, and Legacy

The Navy's Initial Blame and Court-Martial

News of the sinking was initially suppressed until after Japan's surrender on August 15, 1945. When the story broke, it caused national outrage. The Navy initially placed the blame squarely on the captain of the USS Indianapolis, Charles B. McVay III. He was court-martialed in 1946 for "hazarding his ship by failing to zigzag" in dangerous waters—a standard procedure that was actually optional at the time. The trial was widely seen as a scapegoating to cover up the larger failures of the Navy's command structure, which had failed to track the ship's progress and denied it an escort. McVay was convicted but received a light sentence. The stigma haunted him until his death in 1968. It was not until 2000, after decades of advocacy by survivors and families, that Congress passed a resolution exonerating Captain McVay, clearing his name of all wrongdoing.

Remembering the Fallen and the Survivors

Of the 1,196 crewmen aboard, only 317 survived. The loss of 880 men—many from shark attacks—remains the greatest single loss of life at sea in U.S. naval history. The survivors endured profound physical and psychological trauma. Many suffered from post-traumatic stress disorder (though not diagnosed as such at the time) and carried the memories of their fallen shipmates and the shark attacks for the rest of their lives. Their stories, like that of L.D. Cox and Melvin "Mel" Collins, became powerful testaments to human endurance.

Preserving History: Resources and Remembrance

Official and Organizational Archives

For those seeking to delve deeper, several invaluable resources exist. The Naval History and Heritage Command (NHHC) maintains an extensive online collection. Here, you can explore documents, photos, maps, and stories from the official archives of the U.S. Navy, providing primary source material on the Indianapolis's construction, service, and sinking. This is an essential destination for researchers and history enthusiasts.

The USS Indianapolis Organization

The official site of the USS Indianapolis organization is run by the survivors themselves, their families, and members of the rescue crew. This grassroots effort is the heart of the living memory. It features personal accounts, crew lists, reunion information, and a profound sense of community dedicated to honoring the crew and educating the public. Their work ensures that the human stories behind the statistics are never forgotten.

Memorials and Cultural Impact

The USS Indianapolis National Memorial in Indianapolis, Indiana, stands as a solemn tribute. The story has also been told in books, documentaries, and the 2016 film USS Indianapolis: Men of Courage. These cultural touchstones help transmit the lessons of the tragedy—about communication failures, the horrors of war, and the limits of human endurance—to new generations.

For the Historian and Modeler: Preserving the Ship in Miniature

A Project in Scale and Respect

For model ship enthusiasts, the USS Indianapolis is a popular and meaningful subject. Building a scale model is a way to connect with this history. As one experienced modeler noted, "I was in a similar position to you and over time I built up my own colour library based on my chosen readily available manufacturer (in my case Humbrol)." This approach allows for customization and authenticity.

Approximating Historical Accuracy

Modelers should understand that "these are approximate matches and are heavily influenced by my perception and how i like my ships to look." Research is key. Consulting period photographs from the NHHC archives, especially those taken during her 1944-1945 service, is crucial for accurate camouflage patterns (Measure 22, a dark blue-gray) and weathered details. The goal is to capture the ship's appearance during her final Pacific deployment, a symbol of strength before her tragic end.

Sourcing Your Model

If you're looking to start or add to your collection, you can find many great new & used options and get the best deals for USS Indianapolis kits and finished models. Online marketplaces like eBay often have listings, such as "Indianapolis survivors (hardcover)" for reference books or "USS Indianapolis" model kits. Many sellers offer free shipping for many products, making it easier to acquire these pieces of maritime history. Whether you seek a "only 317 survived" commemorative item or a detailed model, these resources serve the community dedicated to remembering the ship and her crew.

Conclusion: A Legacy of Sacrifice and Lessons Learned

The story of the USS Indianapolis is not merely a historical footnote; it is a searing lesson in the costs of war, the fragility of life, and the consequences of systemic failure. From her launch in 1931 as a proud flagship to her secret mission carrying the atomic bomb components, her service was exemplary. Her sinking, a direct result of denied escorts and missed communications, led to a four-day ordeal of unimaginable horror in the Philippine Sea, culminating in the worst shark attack in history. The daring pilot who spotted the survivors and the courageous crew of the USS Cecil J. Doyle who rescued them represent the best of human response in the face of catastrophe.

The aftermath—the scapegoating of Captain McVay, the long fight for exoneration, and the tireless work of survivors to keep the memory alive—shows a nation grappling with its responsibilities. Today, through the Naval History and Heritage Command's online collection and the USS Indianapolis organization, the stories of the 880 who died and the 317 who survived are preserved. They remind us of the importance of accountability, the value of every sailor's life, and the enduring spirit of those who endured the sea's merciless embrace. The USS Indianapolis will forever sail in history as a warship whose final voyage became a testament to both human vulnerability and resilience, a solemn warning etched in the depths of the Pacific.

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