How many shafts are typically found in the reactor systems?

In naval reactor systems, the typical configuration indeed includes four shafts. This setup allows for redundancy and improved efficiency in propulsion. Each shaft is connected to its own turbine, which is driven by steam generated in the reactor. The number of shafts can impact a vessel's maneuverability and speed, as well as its overall operational capabilities.

Having four shafts can provide advantages like increased reliability and enhanced control at various speeds. This design choice contributes to the resilience of the propulsion system, allowing for continued operation even if one or more components experience issues. Other configurations, such as those with two or three shafts, might be used in different classes of ships, but four shafts is a common design in many modern naval vessels equipped with nuclear reactors. Thus, this answer accurately reflects the typical reactor system configuration.