Navy Attack Submarine Smashed Into an ‘Underwater Mountain’ at High Speed

Written by on October 1, 2024

What You Need to Know: In 2005, the USS San Francisco, a U.S. Navy nuclear-powered attack submarine, collided with an uncharted undersea mountain while traveling at maximum speed at a depth of 525 feet southeast of Guam. The impact caused significant damage, rupturing forward ballast tanks and severely damaging the sonar dome.

-Tragically, one sailor lost his life, and 98 crew members were injured. Remarkably, the submarine's inner hull and nuclear reactor remained intact, allowing the crew to surface and navigate back to port over 52 hours. An investigation cited navigational errors . . .



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