Coordinates: 41°53′17.00″N 72°42′44.00″W / 41.8880556°N 72.7122222°W
The S1C reactor was a prototype naval reactor designed for the United States Navy to provide electricity generation and propulsion on warships. The S1C designation stands for:
The Windsor site was located at 1000 Prospect Hill Rd. (the address was later changed to 2000 Day Hill Road) on a 530 acre tract purchased by Combustion Engineering in 1955.
This nuclear reactor was built in Windsor, Connecticut as a prototype for the experimental USS Tullibee (SSN-597) submarine, though that boat was in fact powered by a S2C reactor. Unusual for a nuclear submarine propulsion plant, steam turbines powered generators, which in turn powered an electric motor. This eliminated the need for reduction gears and their associated underwater noise. The USS Tullibee was an early advanced-design, fast-attack submarine constructed by Electric Boat and commissioned in 1960.