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meet the Vanguard class submarine the
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silent guardian of Britain's nuclear
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deterrent at nearly 150 m long
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displacing 15,900 tons it's powered by a
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Rolls-Royce nuclear reactor that gives
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it unlimited range each carries 16
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Trident 2 D5 ballistic missiles with a
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range of over 4,000 mi plus Spearfish
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torpedoes for close defense crewed by
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135 personnel it's been in service since
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1993 operating undetected deep beneath
