FILE 011 // PUBLIC RECORD
Operation IVY BELLS
A covert Cold War intelligence operation in which U.S. submarines placed recording equipment near an underwater Soviet naval communications cable in the Sea of Okhotsk.
DOCUMENTATION CONFIDENCE
HighMultiple official or primary archival sources consistently establish the core dates, organizations, events, and outcomes summarized in this file.
CASE OVERVIEW
Operation IVY BELLS: What the public record documents
For years, American submarines secretly collected Soviet naval communications from the bottom of the ocean.
EXECUTIVE SUMMARY
The public record identifies Operation IVY BELLS as a signals intelligence matter associated with U.S. Navy, NSA, CIA during 1971–1981. A covert Cold War intelligence operation in which U.S. submarines placed recording equipment near an underwater Soviet naval communications cable in the Sea of Okhotsk.
For years, American submarines secretly collected Soviet naval communications from the bottom of the ocean.
A covert Cold War intelligence operation in which U.S. submarines placed recording equipment near an underwater Soviet naval communications cable in the Sea of Okhotsk.
The linked source set contains 2 official or primary archival records. Together, these materials establish the responsible organizations, the relevant time period, the reported location, and the official findings or historical conclusions summarized in this file.
Where the underlying records contain allegations, witness statements, preliminary leads, or unresolved observations, this archive identifies them as claims or unresolved material rather than established fact. The appearance of a statement in a government file does not by itself prove that the statement is accurate.
KEY FINDINGS
Documented time period: 1971–1981.
Primary organizations or record holders: U.S. Navy, NSA, CIA.
Principal location: Sea of Okhotsk.
Archive topic: Signals Intelligence.
DOCUMENT ANALYSIS
CIA Reading Room — Reports on submarine spying
Official archival or primary-source recordProvides released CIA records or official historical material describing the operation, program, or agency assessment.
OPEN DOCUMENT ↗CIA Reading Room — Ivy Bells reporting
Official archival or primary-source recordProvides released CIA records or official historical material describing the operation, program, or agency assessment.
OPEN DOCUMENT ↗SOURCE DOCUMENTS
CIA Reading Room — Reports on submarine spyingOfficial or primary archival source used to document this file.OPEN SOURCE ↗CIA Reading Room — Ivy Bells reportingOfficial or primary archival source used to document this file.OPEN SOURCE ↗