The West Loch Disaster was an American maritime accident during World War II at the Pearl Harbor U.S. Naval Base in Hawaii. The incident, which occurred just after 3pm on Sunday 21 May 1944, began following an explosion in a staging area for Landing Ships, Tank (LSTs) and other amphibious assault ships in West Loch. A fire quickly spread among the ships being prepared for Operation Forager, the invasion of the Japanese-held Mariana Islands. Over the next 24 hours, six LSTs sank, 163 naval personnel died and 396 were injured.