HistoricSiteMarkers
Postwar & Contemporary

Glomar Explorer

Philadelphia, Philadelphia County, Pennsylvania

Marker Inscription

In a covert CIA plan named the Jennifer Project, this ship was built at Sun Shipbuilding and Dry Dock Company, Chester, in the early 1970s and played a key role in US Cold War espionage. Its mission was to obtain intelligence by recovering a sunken Soviet submarine, three miles deep in the Pacific Ocean. Portions of the sub were raised by the ship's huge claw in the summer of 1974; six Soviet submariners were recovered and given a burial at sea.

Erected by Pennsylvania Historical and Museum Commission

The Story

At the height of the Cold War, the CIA hatched one of its boldest intelligence gambits: recovering a Soviet submarine from three miles down in the Pacific. The cover story was billionaire Howard Hughes mining the seabed for manganese, but the true purpose was espionage, and the Glomar Explorer—built at the Sun Shipbuilding yard in Chester—was the improbable machine to do it. In 1974 its giant claw lifted portions of the wreck, and the recovered Soviet sailors were given a burial at sea.

Why it matters

The mission gave rise to the famous 'we can neither confirm nor deny' response and stands as one of the most audacious feats of Cold War espionage and American marine engineering.

Plan your visit

Nearby

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Museums & culture

Attractions

Food & drink

  • Olivier Cafe
    0.4 mi away · 50 South 3rd Street, Philadelphia, PA
  • FRIEDA
    0.4 mi away · 320 Walnut Street, Philadelphia, PA
  • National Mechanics
    0.4 mi away · 22 South 3rd Street, Philadelphia
  • Menagerie Coffee
    0.4 mi away · 18 South 3rd Street, Philadelphia, PA
  • PrimoHoagies
    0.4 mi away · 304 Market Street, Philadelphia, PA
  • Buddakan
    0.4 mi away · 325 Chestnut Street, Philadelphia, PA

Places to stay

Places data © OpenStreetMap contributors. Hours and details change — call ahead.

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Related events

  • · Project Azorian / Jennifer Project

Themes & tags

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