Beginning about 2 p.m., the
Liberty was attacked by several IAF aircraft, initially by two Mirage IIIs, employing cannon, rockets and bombs,
[32] followed by two
Dassault Mysteres carrying
napalm. One napalm bomb hit the ship.
[33] The leader of the Mirage formation identified the ship as a
destroyer, mistaking the off-center fed
parabolic antenna on its
forecastle for a gun. The fact that the ship had Latin markings led IDF Chief of Staff
Yitzhak Rabin to fear that the ship was Soviet; he ordered the planes and a three torpedo boat squadron that had been ordered into the area to withhold fire pending positive identification of the ship, and sent in two helicopters to search for survivors. These radio communications were recorded by Israel. The order also was recorded in the ship's log, although the commander of the torpedo boat squadron stated that he had not received it.
[34]
When the commander of torpedo boats could see the
Liberty, he immediately realized the ship was not a destroyer or any type of warship capable of 30 knots (56 km/h) speed. He immediately ordered the attack stopped pending better identification "although this was difficult due to the billowing clouds of smoke that enveloped the vessel; only her bow, part of her bridge and the tip of her mast could be discerned." The commander attempted to signal the ship but got a reply asking him to identify himself. He also observed gun fire from the ship. He consulted an Israeli identification guide to Arab fleets and concluded the ship was the Egyptian supply ship
El Quseir. Another of his boat captains reached the same conclusion.
[35] Based on that identification, the gun fire and what he considered an evasive response to his signal, the commander ordered the attack to proceed.(ibid. p. 17)