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USS Liberty Incident

Published September 8, 2026

01In brief

The USS Liberty incident was the June 8, 1967, attack by Israeli aircraft and naval vessels on a U.S. Navy signals-intelligence ship operating in international waters off the Sinai coast during the Six-Day War. The attack killed 34 crew members and wounded about 171. U.S. and Israeli inquiries that reached findings on intent generally concluded that the Liberty had been mistaken for an enemy vessel, although several U.S. reviews made no finding about Israeli intent. The CIA found “little doubt” that the attack resulted from mistaken identity, while the U.S. Navy Court of Inquiry found no indication that it was intended against a U.S. ship. Israel acknowledged responsibility that day, apologized, and later paid compensation to the casualties and the U.S. government. The official findings did not end the controversy. Some survivors and former U.S. officials have alleged that the attack was deliberate or that evidence was suppressed, while formal investigations found no proof that Israel knowingly attacked an American vessel. The incident has also been exploited by white supremacists and other antisemitic propagandists.

02Background

In spring 1967, as tensions between Israel and its Arab neighbors mounted, the United States repositioned the USS Liberty from its normal station off West Africa to the eastern Mediterranean to expand signals-intelligence coverage of the crisis. The converted Victory-class merchant ship sailed from Rota, Spain, on June 2.[2] Formally designated Auxiliary General Technical Research Ship AGTR-5, the 455-foot vessel was under the U.S. Sixth Fleet but operated under orders from the Joint Chiefs of Staff and the National Security Agency.[5]

Published accounts give different crew figures: one describes a 294-man crew, while another gives a total complement of 358. The Liberty carried large antennas and radar discs, four .50-caliber machine-gun mounts, freshly painted GTR-5 markings, and a standard American flag.[5][1] Its original orders required it to remain at least 12.5 miles from the United Arab Republic coast and 6.5 miles from Israel. A revised order directed the ship to remain at least 100 miles from both coasts, but transmission was delayed by confusion over responsibility for delivering it and the message did not reach the ship before the attack.[2]

Before the attack, Israeli Chief of Staff Yitzhak Rabin reportedly warned U.S. Naval Attaché Ernest Castle that unidentified vessels could be treated as hostile and advised the United States to identify its ships in the area or remove them. The United States did not provide Israel with the Liberty’s position and rejected a request for formal naval liaison.[5] One reconstruction describes the Liberty as cruising at about five knots just outside territorial waters north of Sinai, between Port Said and Gaza; a contemporaneous U.S. chronology logged positions approximately 15 and 23 nautical miles north of the UAR coast at different times on June 8.[5][6]

03Course of the Attack

Israeli reconnaissance had earlier identified a vessel believed to be the GTR-5, but its marker at naval headquarters was removed after it was considered outdated. Following an explosion near El-Arish that Israeli forces interpreted as possible shelling from the sea, three torpedo boats pursued what they believed was an enemy vessel. An Israeli officer incorrectly estimated its speed at 28–30 knots, although the Liberty’s stated maximum was 18 knots and it was actually moving at about five knots. The torpedo-boat commander later reported mistaking it for the Egyptian vessel El Quesir.[5][7]

One reconstruction places the clearance for Israeli Mirage fighters to attack at approximately 1:58 p.m. local time. The aircraft fired rockets and 30-mm cannon shells, severed antennas, started fires, and killed nine men in the initial assault. Super-Mystère aircraft carrying napalm subsequently joined the attack, which lasted about 14 minutes; more than 800 holes were later counted in the hull.[5]

A contemporaneous U.S. intelligence chronology uses Zulu time. It records six strafing runs beginning at 1205Z, three torpedo boats approaching from the starboard quarter at 1225Z, a torpedo and strafing attack at 1227Z, and one torpedo striking the starboard side at approximately 1228Z. Israeli helicopters were orbiting the damaged ship at a range of about 500 yards by 1255Z.[6]

The torpedo opened a hole estimated at 39 feet across at the bottom and 24 feet near the waterline. Flooding extended below the second deck between frames 52 and 78, while fires and cannon fire damaged the superstructure. The motor whale boat and virtually all life rafts were lost, and classified communications and radar equipment were destroyed or placed under emergency security procedures. The engineering plant remained intact, and the crew kept the ship afloat.[2] During the attack, the original flag was shredded and replaced with a larger 7-by-13-foot American ensign.[5]

Although its radios were damaged, the crew re-established contact with the Sixth Fleet. Aircraft were launched from the carriers USS America and USS Saratoga and later recalled after the attackers were identified as Israeli.[4][5] Israel subsequently offered assistance through helicopters and a bullhorn. Firing had ceased earlier, and Israeli contact with the Liberty ended by approximately 5:05 p.m.[5]

04Casualties and Damage

The attack killed 34 crew members. The Anti-Defamation League and Jewish Virtual Library report 171 wounded, while The Jerusalem Post reports 170 and a 2026 House resolution cites 174.[1][5] The torpedo strike killed 25 people, most of them in the intelligence section, while nine died during the initial air assault.[5]

A CIA memorandum dated June 13 still carried preliminary figures of 10 killed, 90 wounded, and 22 missing, with most of the missing believed trapped in flooded compartments.[2] The later casualty totals therefore should not be conflated with the memorandum’s interim accounting.

The Liberty left the area with nearly all systems disabled and was decommissioned in 1968.[5] Captain William Loren McGonagle received the Medal of Honor for his conduct during and after the attack, and the ship’s officers and crew received numerous commendations for courage and steadfastness.[1][5] A photograph records the Liberty in Chesapeake Bay on July 29, 1967, after its return from the Mediterranean.[1]

05Immediate Diplomatic Response

Israel acknowledged on June 8 that its aircraft and motor torpedo boats had struck the Liberty in error. Declassified U.S. records describe carrier aircraft being dispatched to investigate or defend the ship and then recalled after Israel accepted responsibility. One State Department account states that eight aircraft from USS Saratoga had been sent and were recalled by 11:25 a.m. Eastern Daylight Time.[4]

That day, Israeli Ambassador Avraham Harman sent Secretary of State Dean Rusk an apology and condolences, while Foreign Minister Abba Eban communicated regret and condolences to the families of those killed and injured. On June 10, Israel renewed its expression of regret and offered compensation.[8] Rusk told Harman that the United States was deeply dismayed and could not accept attacks on U.S. vessels on the high seas, while acknowledging that Israel’s prompt notification may have prevented more serious consequences.[4]

A revised U.S. diplomatic note stated that the Liberty had been engaged in peaceful activity in international waters, was flying the American flag, and displayed large identification letters and numerals in broad daylight and excellent weather. It argued that the ship’s nationality should have been established before an attack was ordered and condemned the episode as military irresponsibility reflecting reckless disregard for human life. The note requested disciplinary measures and compensation for the loss of life and material damage.[9]

06Official Investigations

The incident produced numerous U.S. and Israeli reviews. One compilation lists ten U.S. investigations and three Israeli investigations, while another reference work counts twelve subsequent investigations—nine American and three Israeli.[3][10] The difference partly reflects how the sources define and count reviews.

Not every U.S. inquiry made a finding about intent. The Joint Chiefs of Staff fact-finding team outlined facts without deciding the cause of the attack, and several Senate and House reviews focused on U.S. communications failures or reached no conclusion about Israeli actions.[3] Reviews that did address intent generally rejected the deliberate-attack interpretation. The U.S. Navy Court of Inquiry, convened June 10–18, 1967, concluded that the attack was a case of mistaken identity and found no indication that it was intended against a U.S. ship. A June 13 CIA report found that the attack was not malicious and resulted from error.[3]

A separate account describes the CIA as finding “little doubt” that the attack resulted from mistaken identity.[1] The Clark Clifford Report found no evidence that the Liberty was known to be American when attacked, while characterizing Israeli failures as gross negligence. The 1979 Senate Select Committee on Intelligence found no merit in claims of an intentional attack, and later NSA and House Armed Services Committee reviews likewise rejected or found no support for that interpretation.[3][11]

The National Security Agency searched for relevant communications after learning of the attack, but no directly responsive intercepts were available. A U.S. Navy EC-121 had, however, recorded conversations between two Israeli helicopter pilots and the control tower at Hazor Airfield after the attack. The NSA released English transcripts of three Hebrew recordings covering 1229Z–1244Z, 1247Z–1319Z, and 1307Z–1311Z on June 8 when it declassified additional material in 2003.[12]

The Israeli inquiries included the Ram Ron Commission, a July 1967 preliminary inquiry, and an IDF history published in 1982; each characterized the attack as a bona fide or innocent mistake.[3] A judicial inquiry headed by Yeshayahu Yerushalmi identified intelligence, procedural, and coordination failures but found no departure from reasonable conduct warranting a court-martial. No officer involved stood trial, although Captain Izzy Rahav, who dispatched the torpedo boats and requested air support, was forced to resign his commission.[5]

The Israeli explanation identified three principal errors: reports that Israeli positions near El-Arish were being shelled from the sea, the erroneous speed estimate of 28–30 knots, and the torpedo boats’ misidentification of the Liberty as the El Quesir.[7] The CIA accepted that the attack was made by mistake but called the identification and command failures “indicative of gross negligence.” The Defense Intelligence Agency concluded that available information did not conclusively establish a premeditated attack on a ship known to be American and that defective Israeli command and control was the best interpretation.[7]

The CIA also noted that Israeli communications initially referred to “a warship that we attacked,” subsequently identified the vessel as Egyptian, and later asked whether it had clearly displayed an American flag. The memorandum observed that the clear weather, flag, and large GTR-5 hull marking should have assisted identification.[2]

07Compensation and Settlement

Israel offered compensation to the victims and their families within 48 hours. It later paid more than $6 million to the families of those killed and wounded, followed by an additional $6 million to the United States for damage to the ship under a 1980 agreement.[5] These payments totaled more than $12 million; another reference work reports the aggregate as $13 million.[10]

The 1980 agreement stated that Israel and the United States consented “not to address the issue or motive or reopen the case for any reason.”[5] It closed the government-to-government financial dispute, although public controversy and demands for another investigation continued.

08Historiography and Legacy

The USS Liberty incident remains a prominent and contested episode in U.S.–Israel relations. Official bodies that made findings about intent generally concluded that the attack resulted from mistaken identification or found no evidence of a deliberate strike, while some U.S. reviews made no intent finding and some survivors and former officials continued to reject the official explanation.[3][5]

Israeli pilot Yiftach Spector, then deputy commander of Israel’s 101st Squadron, said he had been told by radio that the vessel was Egyptian and ordered to attack. He summarized his account with the words, “There was a mistake. Mistakes happen.”[13] NSA oral-history interviews conducted with surviving crew members in 1980 documented continuing bitterness toward both Israel for the attack and the U.S. government for what interviewees regarded as an inadequate response.[1]

A 1968 sociological study recorded differing reactions among members of one American Jewish community. Some respondents regarded the incident as an accident arising from a fast-moving war, while others believed it was deliberate or questioned the Liberty’s presence in the area. One supporter of Israel called the incident a “catastrophe” and said, “you don’t bite the hand that feeds you,” yet the study found no reason to believe that he reduced his support for Israel. Other respondents feared that anti-Jewish bigots would exploit the incident.[14]

The Liberty returned to Chesapeake Bay in July 1967 and was decommissioned the following year. McGonagle’s Medal of Honor and the crew’s other commendations remain the principal official recognition of their efforts to save the damaged ship and care for its casualties.[1][5]

09Ongoing Controversies and Deliberate-Attack Claims

Beginning in the early 1980s, some former crew members—including Phil Tourney and Joe Meadors of the Liberty Veterans Association—demanded new investigations and alleged that Israel had deliberately attacked the ship.[1] Meadors also questioned whether the United States had conducted a genuine investigation.[13] In 1986, the Liberty Lobby and SOS Liberty coalition organized a press conference seeking a congressional inquiry into what they called a “deliberate and unprovoked attack”; expected participants included former Joint Chiefs of Staff Chairman Admiral Thomas Moorer and former Assistant Secretary of the Navy Johnny Johnson.[15]

Several former officials also disputed the official explanation. Moorer said he could not accept mistaken identity, Dean Rusk later expressed skepticism about the Israeli account, and George Ball described the U.S. response as an “elaborate charade.”[5] H.Res. 1406, introduced in the House on June 30, 2026, attributes similar views to several former officials, calls for further declassification, and describes the incident as “unprovoked.” It is an introduced resolution, not an enacted congressional finding.[16]

One allegation promoted by deliberate-attack advocates holds that Israel intended to sink the Liberty without survivors and blame Egypt in hopes of drawing the United States into the war.[17] Formal U.S. and Israeli investigations found no credible evidence for that hypothesis.[3] The Anti-Defamation League has documented the use of deliberate-attack narratives by white supremacists and other antisemitic actors seeking to stir hostility toward Jews and Israel.[1] Such exploitation does not determine what occurred on June 8, but it has contributed to the incident’s continuing politicization.

The documentary record also explains why the controversy persists. The Liberty was flying an American flag, carried large identification markings, and was operating in clear weather—conditions the U.S. diplomatic note said should have permitted identification.[2][9] At the same time, the CIA and Defense Intelligence Agency found no conclusive evidence of premeditation against a vessel known to be American, while criticizing serious failures of identification and command. The Israeli inquiry attributed the attack to the false shelling report, the erroneous speed estimate, and confusion with the El Quesir.[7] Thus, the official record generally supports mistaken identification accompanied by severe institutional failures, while deliberate-attack claims remain part of the public controversy.

Sources

  1. 1Anti-Defamation League (ADL), USS Liberty Incident (accessed September 8, 2026)
  2. 2U.S. Dept. of State, FRUS 1964–68, Vol. XIX, CIA Intelligence Memorandum (accessed September 8, 2026)
  3. 3Jewish Virtual Library, Investigations of the Liberty Tragedy (accessed September 8, 2026)
  4. 4Jewish Virtual Library, State Dept. Documents, June 1967 (accessed September 8, 2026)
  5. 5Jewish Virtual Library, The USS Liberty: Case Closed (accessed September 8, 2026)
  6. 6U.S. Dept. of State, FRUS 1964–68, INR Comments on USS Liberty (accessed September 8, 2026)
  7. 7U.S. Dept. of State, FRUS 1964–68, Telegram on Israeli Court of Inquiry (accessed September 8, 2026)
  8. 8Jewish Virtual Library, Secret Report on the Liberty (accessed September 8, 2026)
  9. 9U.S. Dept. of State, FRUS 1964–68, Diplomatic Note from Sec. Rusk (accessed September 8, 2026)
  10. 10Encyclopedia.com, USS Liberty (accessed September 8, 2026)
  11. 11CAMERA, Viewers' Guide to the History Channel's USS Liberty (accessed September 8, 2026)
  12. 12Jewish Virtual Library, NSA Intercepts of Pilots (accessed September 8, 2026)
  13. 13The Jerusalem Post (accessed September 8, 2026)
  14. 14Lakeville and Israel (BJPA) (accessed September 8, 2026)
  15. 15American Jewish Archives, USS Liberty Press-Conference Materials (accessed September 8, 2026)
  16. 16U.S. Congress, H.Res. 1406 (accessed September 8, 2026)
  17. 17Anti-Defamation League (ADL), Billboard Campaign (accessed September 8, 2026)

IsraelPedia Question & Answers

  • What was the USS Liberty incident?

    The USS Liberty incident was the June 8, 1967, attack by Israeli aircraft and naval vessels on a U.S. Navy signals-intelligence ship operating in international waters off the Sinai coast during the Six-Day War. The attack killed 34 crew members and wounded about 171. U.S. and Israeli inquiries that reached findings on intent generally concluded that the Liberty had been mistaken for an enemy vessel, although several U.S. reviews made no finding about Israeli intent. Israel acknowledged responsibility that day, apologized, and later paid compensation to the casualties and the U.S. government.

  • Why was the USS Liberty operating off the Sinai coast in 1967?

    As tensions between Israel and its Arab neighbors mounted in the spring of 1967, the United States repositioned the USS Liberty from its normal station off West Africa to the eastern Mediterranean to expand signals-intelligence coverage of the crisis. The ship sailed from Rota, Spain, on June 2, operating under orders from the Joint Chiefs of Staff and the National Security Agency.

  • How did the Israeli attack on the USS Liberty unfold?

    Following an explosion near El-Arish that Israeli forces interpreted as possible shelling from the sea, Israeli Mirage fighters attacked the Liberty with rockets and 30-mm cannon shells, severing antennas, starting fires, and killing nine men in the initial assault. Super-Mystère aircraft carrying napalm subsequently joined the attack, which lasted about 14 minutes. Three torpedo boats then approached and fired a torpedo that struck the starboard side, opening a hole estimated at 39 feet across at the bottom and killing 25 people, most of them in the intelligence section.

  • What did official U.S. and Israeli investigations conclude about the USS Liberty attack?

    Official investigations that addressed the question of intent generally concluded that the attack resulted from mistaken identification rather than deliberate action. The U.S. Navy Court of Inquiry found no indication that the attack was intended against a U.S. ship, and a CIA report found that the attack was not malicious and resulted from error. The Clark Clifford Report found no evidence that the Liberty was known to be American when attacked, while characterizing Israeli failures as gross negligence. Israeli inquiries, including the Ram Ron Commission and a judicial inquiry headed by Yeshayahu Yerushalmi, each characterized the attack as a bona fide or innocent mistake.

  • How much compensation did Israel pay following the USS Liberty attack?

    Israel paid more than $6 million to the families of those killed and wounded, followed by an additional $6 million to the United States for damage to the ship under a 1980 agreement, bringing the total to more than $12 million, though another reference work reports the aggregate as $13 million. The 1980 agreement stated that Israel and the United States consented not to address the issue of motive or reopen the case for any reason, closing the government-to-government financial dispute.

  • Who has alleged that the USS Liberty attack was deliberate, and what do those claims assert?

    Beginning in the early 1980s, some former crew members, including Phil Tourney and Joe Meadors of the Liberty Veterans Association, demanded new investigations and alleged that Israel deliberately attacked the ship. Several former officials, including former Joint Chiefs of Staff Chairman Admiral Thomas Moorer, former Secretary of State Dean Rusk, and former official George Ball, also disputed the official explanation. One allegation promoted by deliberate-attack advocates holds that Israel intended to sink the Liberty without survivors and blame Egypt in hopes of drawing the United States into the war, a hypothesis for which formal U.S. and Israeli investigations found no credible evidence.

  • How has the USS Liberty incident been exploited beyond the immediate controversy over the attack?

    The Anti-Defamation League has documented the use of deliberate-attack narratives about the USS Liberty by white supremacists and other antisemitic actors seeking to stir hostility toward Jews and Israel. This exploitation has contributed to the incident's continuing politicization, though it does not determine what actually occurred on June 8, 1967.