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Submarine magnetism

The Thames Towboat Co. tugs Paul A. Wronowski and John P. Wronowski were guiding the U.S. Navy Virginia-class attack submarine USS Vermont (SSN 792) through a 180-degree turn Friday as the submarine prepared to make a pass through the Navy's magnetic silencing range in the Thames River between the Electric Boat Shipyard in Groton and Fort Trumbull State Park in New London.

The control office for the range is housed in building 109 at the park. The facility, the only one the Navy has in the Northeast, measures the magnetic characteristics of naval vessels passing through.

The Thames River range was replaced in 2012, and will be be relocated in the future to avoid conflict with the new floating dry dock facility under construction at EB.

The Vermont is the 19th boat in the class and was commissioned in April 2020 in Groton.


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