Analysing satellite images of Russian submarine
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The U.S. operates a fleet of more than 50 nuclear-powered fast attack submarines to counter China's naval threat.
The nuclear reactor of the fourth Suffren-class nuclear-powered attack submarine (SSN), De Grasse (S638), was fired up for the first time.
Submarine builder General Dynamics Electric Boat delivered a Virginia-class attack boat to the U.S. Navy on Monday, the service announced. The future USS Idaho (SSN-799) is the second attack boat the Navy has received this year,