The USS San Diego was the only major warship the U.S. lost during World War I. Now, nearly 100 years after it sank, and countless theories as to what caused the wreck, researchers believe they have determined the cause of it — a German submarine in conjunction with a mine.
from FOX News https://ift.tt/2B9Z9oU
from FOX News https://ift.tt/2B9Z9oU
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