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Ships built in Groton, Connecticut
1942 ships
Maritime incidents in August 1944
Maritime incidents in May 1943
World War II submarines of the United States
Friendly fire incidents of World War II
United States submarines lost with all hands
Shipwrecks in the South China Sea
Gato-class submarines
World War II shipwrecks in the South China Sea
Shipwrecks of the Philippines
Submarines sunk by Japanese warships

USS Harder (SS-257): page information

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CreatedJun 17, 2026, 8:07 AM

UpdatedJun 18, 2026, 8:47 PM