Detection for Protection
Battleship Cove unveils Radar Picket Ship Exhibit on board USS Massachusetts

The embers of Hiroshima and Nagasaki had barely cooled when the Soviets challenged U.S. military superiority by detonating their own atomic device on August 29, 1949. As the threat of long-range Badger bombers loomed over the consciousness of the American public, top armed forces strategists agreed that early detection was the key to national survival. Radar picket ships, designated YAGR/AGRs, were part of an integrated air defense early warning system to warn the Continental United States of Soviet Bloc air attacks. Extending across Alaska, Northern Canada, Greenland, and the North Atlantic, this system was headquartered in Colorado Springs in a secret bunker in Cheyenne Mountain.


In May 2003, Battleship Cove unveiled New England’s first interpretation of these covert Cold War relics during a premiere that included a crewmembers reunion, memorial ceremony and 21-gun salute on board USS Massachusetts. Funded by the national YAGR Association, which donated $1,000 to the Cove during the ceremony, this exhibit was designed by the Association’s founder, Harry Miller, and is located on the battleship’s second deck, forward of Crewmember’s Hall.

“The YAGRs represented a critical component of this nation’s air defense in the Cold War,” says Battleship Cove’s chief preservation engineer, Strafford Morss, who served on board the picket ship Protector during the tumultuous Bay of Pigs invasion. “Given the events of the last year, one must not underestimate the importance of the advance warning provided by such surveillance.”

Converted from mothballed WWII Liberty cargo ships, the YAGR/AGRs were evenly divided into four ocean stations off the Atlantic coast and four stations off the Pacific. At sea life was smooth, rough, hot, cold, wet and windy, clear or foggy, but never dull. Equipped with three massive high power radars, extensive radio communications, and an airplane homing beacon, YAGRs engaged in mock battles against Strategic Air Command bombers testing NORAD air defense capabilities with penetration tactics including electronic jamming and deception.

In the early 1960s, barely a decade after their inception, land-based and submarine launched ballistic missiles rendered these venerable vessels obsolete. By 1966, all the ships were out of commission, replaced by massive shore-based radars, thus ending an intriguing chapter in American naval history.

Click on thumbnails to enlarge.


USS Watchman AGR 16


Chief Harry Miller generously awarded Battleship Cove a $1000 donation from the YAGR Association.

CDR Strafford Morss, USNR (Ret.) delivered the keynote address for the exhibit's dedication.

Be sure to look for this exhibit the next time you visit Battleship Cove!