77.The first nuclear-powered submarine, the USS Nautilus, was launched in 1954.

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ussnautilus
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submarine
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nuclearpower
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launch
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navy
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military
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technology
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innovation
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engineering
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design
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propulsion
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speed
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endurance
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maneuverability
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defense
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security
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strategy
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history
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achievement
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legacy
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crew
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mission
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operation
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exploration
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discovery
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science
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research
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development
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advancement
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progress