KBC 2021: Which was the world’s first nuclear-powered submarine? 

Nautilus 

Seawolf

Triton

Halibut

Answer: Nautilus

The Nautilus was built by American
engineer Robert Fulton in 1800 under a grant from Napoleon. It was the first
ever nuclear submarine which set the for the standards for future nuclear
submarines and was decommissioned in 1980.

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