How Many Nuclear Submarines Are In Uk Waters?

The service operates six fleet submarines (SSNs), of the Trafalgar and Astute classes (with two further Astute-class boats currently under construction), and four ballistic missile submarines (SSBN), of the Vanguard class. All of these submarines are nuclear powered. How many UK nuclear submarines are at sea? Today, the United Kingdom’s strategic nuclear deterrent is provided …

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