Unclassified // For public releaseRELEASE 001 — OXCART — In developmentDoc. BSB/PUB/26-01
BLACKSITE BOYS
Operation 002*BSB-1974-003*

Project Azorian

Designation
Covert recovery of a Soviet ballistic-missile submarine
Location
North Pacific Ocean
Approx. 1,560 miles northwest of Hawaii
Period
1968–1975
Status
Partially successful
Hughes Glomar Explorer underway at sea
PL. 01Hughes Glomar Explorer underway at seaU.S. Government

Summary

The ship was real. The mining was not. In the summer of 1974 the Hughes Glomar Explorer stopped over a point in the North Pacific and lowered a claw three miles to the seafloor.

Objective:
Recover one Soviet ballistic missile submarine.
Depth:
16,500 feet.
Cover story:
Deep-sea mining.
Status:
Partially successful.

In March 1968 a Soviet Golf II-class submarine, K-129, sank in the North Pacific with ninety-eight men aboard and three nuclear ballistic missiles in its sail. The Soviet Navy searched for weeks and did not find it. The United States, which had been listening, did.

The wreck lay at 16,500 feet, roughly 1,560 miles northwest of Hawaii. A Navy submarine, USS Halibut, photographed it. Nothing of that size had ever been lifted from that depth. The Central Intelligence Agency decided to lift it anyway.

16,500ftDepth of the wreck. Roughly eleven Sears Towers, stacked.

§ 01A ship for a reason

The plan required a vessel that did not exist, built for a purpose no one could state. The agency turned to Howard Hughes, whose public reputation made almost any undertaking plausible. Hughes’ Summa Corporation announced that it would mine manganese nodules from the floor of the Pacific — speculative, but respectable — and commissioned a ship to do it.

The Hughes Glomar Explorer was launched on 4 November 1972 at Sun Shipbuilding in Chester, Pennsylvania. It had a derrick amidships and, below the waterline, a well nearly two hundred feet long through which something very large could be brought inside the hull without anyone outside seeing it.

The claw — officially the Capture Vehicle, informally Clementine — was built separately and kept out of sight inside a submersible barge, HMB-1, which could sink beneath the ship and pass its cargo up into the hull. The cover was convincing enough that parts of the mining industry began to take the ocean floor seriously.

Dwg. BSB-74-003-A02,5005,0007,50010,00012,50015,000FTHughes Glomar Explorer619 ft. Launched 1972DerrickPipe stringLowered section by sectionCapture vehicle'Clementine'K-129Golf II classSection recovered38 ft of bowSea floor — 16,500 ftSea levelSears Tower, 1,451 ft — ×11.4
FIG. 01Hughes Glomar Explorer, pipe string and capture vehicle in section. Vertical scale compressed.Scale Vert. 1:20,000

§ 02The lift

The ship arrived on station on 4 July 1974. Over the following weeks it lowered a string of steel pipe, section by section, until the claw reached the bottom. Two Soviet vessels came to watch. The crew stacked crates on the helicopter deck so that nothing could land on it.

The lift began around 1 August. Partway up, several of the claw’s grabber arms failed and most of the submarine broke away and fell back to the seafloor. What remained — a 38-foot section of the bow — was brought into the ship about a week later.

Inside were the remains of six Soviet sailors. On 4 September 1974 they were buried at sea with military honors, in a ceremony conducted partly in Russian, and filmed. In 1992 the Director of Central Intelligence gave a copy of the film to Boris Yeltsin.

§ 03Disclosure

In June 1974, a month before the lift, Summa’s offices at 7000 Romaine Street in Hollywood were burgled. Among the material taken was a document linking Hughes to the CIA. In February 1975 the Los Angeles Times ran a version of the story, under the name the press would keep using: Jennifer — which was in fact the name of the security compartment that protected it. Jack Anderson broadcast it in March. A second mission, MATADOR, was cancelled.

When a journalist filed a Freedom of Information Act request about the ship, the agency replied in a form that has since become doctrine: it could neither confirm nor deny that the records existed. See The Glomar Response.

The cost is usually given as around $800 million, in 1970s dollars. The CIA released its own internal history of the operation in 2010, with redactions.

[A]

Chronology

10 entries
  1. K-129 lost with all 98 crew.
  2. USS Halibut locates and photographs the wreck.
  3. Hughes Glomar Explorer launched, Chester, Pennsylvania.
  4. Summa Corporation offices, 7000 Romaine Street, burgled.
  5. Glomar Explorer on station.
  6. Lift. Grabber arms fail. Bow section recovered.
  7. Six crew buried at sea.
  8. Los Angeles Times publishes.
  9. Jack Anderson broadcasts.
  10. CIA internal history released.
[B]

Plates

02 additional
Aerial view of a Soviet Golf II-class ballistic missile submarine underway (U.S. Navy reconnaissance photo)
PL. 02A Golf II-class submarine, the class of K-129, photographed by the U.S. NavyU.S. Navy
CIA-built model of the sunken K-129 submarine wreck on the seabed, CIA Museum
PL. 03CIA model of the K-129 wreck as it lay on the seabedCentral Intelligence Agency
[C]

Documents in this file

02 items
First page of the redacted CIA history 'Project AZORIAN: The Story of the Hughes Glomar Explorer'
DOC 01

Project AZORIAN: The CIA and the Raising of the K-129

First page of the redacted CIA history 'Project AZORIAN: The Story of the Hughes Glomar Explorer'

Origin
Central Intelligence Agency — internal history
Date
Released Feb 2010
View source
Page from declassified CIA Project Azorian files showing a photocopied image of the MV Hughes Glomar Explorer
DOC 02

Glomar Explorer — agency file page

Page from declassified CIA Project Azorian files showing a photocopied image of the MV Hughes Glomar Explorer

Origin
Central Intelligence Agency
Date
1970s
[D]

Sources

Public record
  1. National Security Archive, Electronic Briefing Book No. 305, “Project Azorian: The CIA’s Declassified History of the Glomar Explorer” (2010)
  2. Central Intelligence Agency, “Project AZORIAN” (cia.gov)
  3. Phillippi v. CIA, 546 F.2d 1009 (D.C. Cir. 1976)