How long can the a nuclear-powered submarine go without refueling?

A nuclear-powered submarine can typically operate for about 20 to 25 years without refueling, depending on its design and operational conditions. The nuclear reactor onboard uses enriched uranium, which provides a long-lasting energy source. This extended operational period allows submarines to remain deployed for months at a time, significantly enhancing their strategic capabilities. However, routine maintenance and inspections may still require them to return to port periodically.