Glomar Explorer

Glomar Explorer is a Pennsylvania historical marker in Philadelphia, Philadelphia County, dedicated 2006.

At Independence Seaport Mus., 211 S Columbus Blvd. & Walnut St., Philadelphia

Get directions ↗Start a road trip Historical trails

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.

TodayHistorical map

Slide toward Today to fade the historical sheet and see the modern map underneath.

Penn State University Libraries

Historical maps covering this location

1872 · Delaware, Montgomery, Bucks counties. (David Rumsey Map Collection, Stanford Libraries)
1944 · 1944 Philadelphia Transportation Company street car, bus and subway-elevated lines route… (Historical map archives, georeferenced via Allmaps)
1979 · Important farmlands, Philadelphia County, Pennsylvania (Penn State University Libraries)
1995 · Philadelphia, Pennsylvania (USGS Historical Topographic Map Collection)
[Philadelphia and neighborhood]. (Library of Congress)

Delaware, Montgomery, Bucks counties, 1872, covering the location of Glomar Explorer, with a pin at the marker's coordinates — Delaware, Montgomery, Bucks counties, 1872, covering this location. David Rumsey Map Collection, Stanford Libraries. The pin is ours, placed from the marker's coordinates.

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What that marker records spans 1777 to 1789, overlapping William Gabby's years there.

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Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov

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