Which condition describes when a ship's reactor cannot supply power to its shaft?

The scenario where a ship's reactor cannot supply power to its shaft is characterized by the Locked Shaft Condition. This condition occurs when there is a mechanical fault or failure that prevents the shaft from turning, despite the reactor being operational. In this state, the reactor generates steam, but the coupling to the shaft is compromised, leading to an inability to convert that steam energy into mechanical energy to propel the vessel.

Understanding this condition is crucial for operational safety and troubleshooting within nuclear-powered ships. Identifying and resolving a Locked Shaft Condition is essential for maintaining propulsion and ensuring the ship's readiness for movement or tactical maneuvers. This condition stands distinct from the other terms, which refer to different operational situations in steam plant management.