Editing Los Angeles-class submarine (section)

===Propulsion===
The ''Los Angeles'' class is powered by the General Electric [[S6G reactor|S6G]] [[pressurized water reactor]]. The hot reactor coolant water heats water in the steam generators, producing steam to power the propulsion turbines and ship service turbine generators (SSTGs), which generate the submarine's electrical power. The high-speed propulsion turbines drive the shaft and propeller through a reduction gear. In the case of a reactor plant casualty, the submarine has a diesel generator and a bank of batteries to provide electrical power. An emergency propulsion motor on the shaft line or a retractable 325-hp secondary propulsion motor power the submarine off the battery or diesel generator.

The S6G reactor plant was originally designed to use the D1G-2 core, similar to the D2G reactor used on the [[guided missile cruiser]] {{USS|Bainbridge|CGN-25|6}}. The D1G-2 core had a rated thermal power of 150 MW and the turbines were rated at 30,000 shp. All ''Los Angeles''-class submarines from {{USS|Providence|SSN-719|6}} on were built with a D2W core and older submarines with D1G-2 cores have been refueled with D2W cores. The D2W core is rated at 165 MW and turbine power rose to approximately 33,500 shp.<ref>[https://www.globalsecurity.org/military/systems/ship/systems/s6g.htm S6G] Accessed on 9 April 2020</ref>