K-129 Submarine Disaster

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K-129 was a Project 629A diesel-electric powered submarine of the Soviet Pacific Fleet, one of six Project 629 strategic ballistic missile submarines attached to the 15th Submarine Squadron based at Rybachiy Naval Base, Kamchatka, commanded by Rear Admiral Rudolf A. Golosov.

K-129 Submarine Disaster - Glomar Explorer
In January 1968, the 15th Submarine Squadron was part of the 29th Ballistic Missile Division at Rybachiy, commanded by Admiral Viktor A. Dygalo. K-129's commander was Captain First Rank V.I. Kobzar. K-129 carried hull number 722 on her final deployment during which she sank on 8 March 1968. It was one of four mysterious submarine disappearances in 1968; the others being the Israeli submarine INS Dakar, the French submarine Minerve and the U.S. submarine USS Scorpion. The Soviet Navy deployed a huge flotilla of ships to search for her but never found her wreck.

The United States attempted to recover the boat in 1974 in a secret Cold War-era effort named Project Azorian. The vessel's position 4.9 kilometres (16,000 ft) below the surface was the greatest depth from which an attempt had been made to raise a ship. The cover story used was that the salvage vessel was engaged in commercial manganese nodule mining. Only part of the submarine was recovered. More details