What propulsion system do NIMITZ Class carriers use?

The NIMITZ Class carriers utilize two nuclear reactors as their primary propulsion system. This configuration allows the carriers to operate at high speeds for extended periods without the need for refueling, giving them significant operational advantages. The nuclear reactors provide a nearly limitless supply of energy, which not only powers the ship's propulsion but also supports the various onboard systems, including weapons and air conditioning.

This choice reflects the design philosophy of the NIMITZ Class, allowing them to sustain long missions and maintain a global presence without the logistical challenges associated with conventional fuel sources. The capability to operate for long durations without refueling is crucial for carriers, as it enhances their readiness and flexibility in various operational environments.