This is what Oliver Kirby, NSA Operations chief, told Jim Ennes of the Liberty survivors organization: "I can tell you for an absolute certainty that they knew they were attacking an American ship." The Liberty website also features testimony from several others who saw the intercepts in '67.
There's a reason Admiral Moorer, Admiral Inman, Richard Helms and all the other American military and intelligence veterans maintain the attack was deliberate, you know.
What I was trying to say is that if Israel wanted to sink the ship, and were planning on purpose to destroy the ship, it would have done so. It did not, because it was an accident.