USS Triton’s Submerged Circumnavigation: May 10, 1960

On May 10, 1960, the USS Triton (SSRN-586), a nuclear-powered submarine of the United States Navy, completed the first submerged circumnavigation of the globe. This groundbreaking journey, conducted as part of “Operation Sandblast,” marked a significant achievement in naval history and demonstrated the advanced capabilities of nuclear submarines.

Background

The USS Triton was an advanced submarine, distinguished as the only one built with twin nuclear reactors in its era. Commissioned on November 10, 1959, Triton was designed for both surface and submerged operations. Shortly after its commissioning, it was chosen to execute a mission that would test the endurance and capabilities of nuclear-powered submarines.

The Mission

• Departure and Route: The ambitious mission began on February 16, 1960, when Triton set sail from New London, Connecticut. Under the command of Captain Edward L. Beach, the submarine traveled a route traditionally followed by the Portuguese explorer Ferdinand Magellan during the first recorded circumnavigation of the Earth.

• Voyage Details: The USS Triton covered a distance of 26,723 nautical miles fully submerged. The journey took 60 days and 21 hours to complete, demonstrating the submarine’s incredible endurance and the reliability of its nuclear propulsion system. Along the way, Triton passed through major points such as Cape Horn and the Strait of Magellan, without surfacing.

Significance

The completion of the submerged circumnavigation was a testament to the strategic potential of nuclear submarines at the height of the Cold War. By remaining submerged for such an extended period, it showcased the ability of the United States to conduct prolonged and covert operations at sea.

Aftermath

The successful mission brought significant accolades to its crew and the United States Navy. Captain Beach was awarded the Legion of Merit for his leadership during the mission. The achievement also boosted morale and confidence in the U.S. submarine program, reinforcing its position in naval strategy and deterrence.

The USS Triton’s circumnavigation remains a historic milestone, not only for its technical prowess but also for its symbolic representation of American innovation and exploration capabilities during the mid-20th century.