The Naval Submarine Base New London is located just south of Ledyard and is a major employer for many of the town’s residents. Despite its name, the base is actually located in the city of Groton, along the Thames River.
During World War I, the base expanded significantly, and by the end of the war it was home to about 1400 personnel and 20 submarines. A second major expansion took place during World War II, when the base grew from roughly 45 hectares to over 200 hectares. After the war, much of the submarine fleet was scrapped as part of postwar downsizing.
Today, the base is home to around 16 attack submarines and serves as a fully operational United States Navy installation. Nearby is General Dynamics Electric Boat, one of the primary builders of U.S. submarines, which adds to the area’s strong naval identity. All U.S. Navy submariners—both officers and enlisted personnel—pass through Groton for part of their training, earning the area the nickname “Submarine Capital of the World.” In total, more than 21,000 civilians, active-duty service members, and their families are connected to the base and the surrounding community.
It is currently home to the following submarines:
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USS Virginia (SSN-774)
- USS South Dakota (SSN-790)
- USS Hyman G. Rickover (SSN-795)
- USS Iowa (SSN-797)
- USS Idaho (SSN-799) – pre-commissioned
- USS Tang (SSN-805) – pre-commissioned
- USS Newport News (SSN-750)
- USS Hartford (SSN-768)
- USS Texas (SSN-775)
- USS California (SSN-781)
- USS Delaware (SSN-791)
- USS Utah (SSN-801) – pre-commissioned
- USS Arizona (SSN-803) – pre-commissioned

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