How many Ship Service Turbine Generators (SSTG) are typically located in each Main Machinery Room (MMR)?

Typically, each Main Machinery Room (MMR) houses two Ship Service Turbine Generators (SSTGs). This configuration is designed to provide redundancy and ensure that there is sufficient power generation capability to meet the ship's electrical demands. Having two SSTGs allows the ship to maintain operational readiness even if one generator requires maintenance or fails, thus ensuring continuous power supply for essential systems and equipment.

This setup balances efficiency and safety, as it provides an adequate amount of electrical power while minimizing the space occupied by generating equipment. Each SSTG operates independently, allowing for flexibility in power distribution across different systems on the vessel. The design reflects the critical need for reliability in naval operations, particularly during extended deployments or in combat situations where maintaining electrical power is vital.