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“Bite-Size Bits of Local, National, and Global History”
New London in New London County, Connecticut — The American Northeast (New England)
 

Magnetic Silencing

Building 109

 
 
Magnetic Silencing Marker image. Click for full size.
By Bill Coughlin, October 9, 2011
1. Magnetic Silencing Marker
Inscription.
The navy uses the magnetic silencing range to determine if a ship may be vulnerable to detection by magnetic mines, which can blow a hole in a vessel and cause it to sink. The range consists of a series of devices installed underwater that measure the magnetic signatures of all submarines and surface ships entering and leaving New London Harbor. An operator in this building checks these measurements to see if a vessel is at risk of being detected by a mine.

The navy requires monitoring of all its vessels to make sure that their magnetic fields do not exceed safe limits. The navy base across the Thames River, in Groton, oversees this facility, which is the only one of its type in the Northeast and one of just nine in the entire world. It provides magnetic silencing services for the U.S. Navy, other government-owned ships, NATO members, and other friendly foreign nations.
 
Erected by Fort Trumbull State Park.
 
Location. 41° 20.587′ N, 72° 5.553′ W. Marker is in New London, Connecticut, in New London County. Marker can be reached from East Street, on the left when traveling south. Click for map. Marker is at Fort Trumbull State Park. Marker is in this post office area: New London CT 06320, United States of America.
 
Other nearby markers.
Magnetic Silencing Marker image. Click for full size.
By Bill Coughlin, October 9, 2011
2. Magnetic Silencing Marker
The marker is seen here on the front of Building 109 at the Thames River waterfront.
At least 8 other markers are within walking distance of this marker. “The Arches” (within shouting distance of this marker); Periscope Test Facility (within shouting distance of this marker); Civil War (within shouting distance of this marker); Coast Guard (within shouting distance of this marker); Post Civil War to 1910 (within shouting distance of this marker); “Aim, Load, Fire” (within shouting distance of this marker); The Third System (about 300 feet away, measured in a direct line); Scientific Research (about 300 feet away). Click for a list of all markers in New London.
 
More about this marker. The background of the marker shows ships at sea.
 
Also see . . .  History of Fort Trumbull. Friends of Fort Trumbull. (Submitted on October 16, 2011, by Bill Coughlin of North Arlington, New Jersey.) 
 
Categories. Science & Medicine
 
Marker in Fort Trumbull State Park image. Click for full size.
By Bill Coughlin, October 9, 2011
3. Marker in Fort Trumbull State Park
Building 109 image. Click for full size.
By Bill Coughlin, October 9, 2011
4. Building 109
 
 
Credits. This page originally submitted on , by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 523 times since then and 3 times this year. Photos:   1, 2, 3, 4. submitted on , by Bill Coughlin of North Arlington, New Jersey. This page was last revised on June 16, 2016.
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