It was discovered that the SS-N-12 AShM was guided by radar only, and the infrared guidance previously suspected did not exist. Based on these pieces, at least one sample was reverse engineered.

Navy divers recovered all of the SS-N-12 debris, with the largest debris no larger than six inches (150 mm), and a total of more than two million pieces. A cover story was thus created to disguise the actual mission: it was claimed that the spy submarines were sent to the Soviet naval range in the Sea of Okhotsk to recover the Soviet SS-N-12 Sandbox supersonic anti-ship missile (AShM) debris so that countermeasures could be developed.Īlthough created as a cover story, this mission was actually carried out with great success: U.S. The tapping of the Soviet naval cable was so secret that most sailors involved did not have the security clearance needed to know about it.

The large recording device was designed to detach if the cable was raised for repair. US Navy Divers working from Halibut found the cable in 400 feet (120 m) of water and installed a 20-foot (6.1 m) long device, which wrapped around the cable without piercing its casing and recorded all communications made over it. Funds for the project were diverted secretly from the deep-submergence rescue vehicle (DSRV) program, and the modified submarines were shown with fake DSRV simulators attached to them.

( June 2015) ( Learn how and when to remove this template message)ĭespite these obstacles, the potential for an intelligence coup was considered too great to ignore, and in October 1971, the United States sent the purpose-modified submarine USS Halibut deep into the Sea of Okhotsk. Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification.

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