An unattended cigarette ignited gasoline vapor and blew apart LST‑353
Eighty drums of high-octane fuel sat stacked fifteen feet from an ordnance elevator, where army stevedores with no training in handling live rounds were unloading mortar shells from a landing craft nested among dozens of others at Pearl Harbor's West Loch. Within minutes, the pier was a fireball visible across the harbor, six ships were sunk, and the U.S. Navy sealed the inquiry for sixteen years. What actually triggered the first blast, and why did the government let the graves of the dead read only "Unknown" for decades?
In this episode, we trace the West Loch disaster of May 1944 from the crowded piers of Tare Eight to a still-unresolved debris field on the Pacific floor, asking how far a wartime government will go to protect an invasion timetable, and what that silence costs the men who die for it.
Person: Francis P. Hammerberg
Location: West Loch, Pearl Harbor, Hawaii
Date: May 21, 1944
Case: the explosion of LST-353 and the destruction of six landing ships
Status: declassified in 1960, sixteen years later, with the death toll still disputed
- LST-353 exploded at 3:08 p.m. on May 21, 1944, at Tare Eight, igniting nested Landing Ships Tank loaded for Operation Forager, the invasion of the Mariana Islands.
- The Naval Board of Inquiry convened the next day, ruled out a Japanese attack, and concluded the disaster was preventable; Admiral Ernest King called it "not an act of God," yet no courts-martial or reprimands followed.
- Official casualty figures range from an initial report of 27 dead and 100 missing to a 2005 Sea Classics estimate of 392 dead, with 163 the most widely cited figure.
- Navy diver Francis P. Hammerberg died in a salvage cave-in on February 17, 1945, and received the only Medal of Honor awarded for a non-combat action in World War II, at a time when the disaster that killed him was still classified.
- Gravestones in the National Memorial Cemetery of the Pacific read only "Unknown" until Congress ordered them amended in the 2000s to read "Unknown, West Loch Disaster, May 21, 1944."
- Three confirmed pieces of a Japanese Ko-hyoteki class midget submarine have been found in the same offshore debris field where 1944 salvage wreckage was dumped, raising the theory that the fifth, unaccounted-for midget sub from the Pearl Harbor attack was recovered and discarded without being identified.
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