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The only GUPPY III submarine preserved in the U.S., the USS CLAMAGORE (SS-343) is Patriots Point iconic Cold War submarine. Check out the timeline below to learn more about its history.
Commissioned and served for 30 years during the Cold War
Converted to the Greater Underwater Propulsion Program or GUPPY II status, to improve its underwater performance
Converted to GUPPY III status by adding a 15-foot (55 ton) section forward of the control room. This was the ultimate upgrade for World War II era diesel-powered submarines.
Decommissioned
Added to Patriots Point fleet
Designated a National Historic Landmark
| Displacement: | 1,975 tons |
| Length: | 322 ft 5 in (98 m) |
| Speed: | 17.2 knots (31.85 km/h) surface; 14.5 knots (26.85 km/h) submerged (30 minutes) |
| Range: | 15,900 nm (29,400 km) at 8.5 knots (15.7 km/h) on surface |
| Armament: | 10 x 21 in (533 mm) torpedo tubes, (6 forward, 4 aft), 24 torpedoes |
Above specifications circa 1962 (GUPPY III)
