The USS Liberty was repeatedly scouted the morning prior to the attack by Israeli Air Force spotters low enough that crew reported they “rattled the deck plating”. The attacks occurred in mid-afternoon in mostly clear conditions, first by Mirages with cannon and rocket fire, followed by ground attack craft dropping naplam, and then a subsequent sea attack by torpedo boats. Despite claims that the vessel had no visible identifying marks it can be clearly seen to be well marked, flying multiple US flags (a large one was hoisted on the radar tower after the initial attack) and equipped with radar and antenna systems that were clearly not Egyptian or Soviet equipment. Secretary of State Dean Rusk repeatedly expressed disbelief in the official Israeli account to explain the multi-prong attack and failure to identify the vessel by the bow markings and hardware, including writing about it in his memoirs.
As for your second statement, labeling any criticism of the Israeli government or military as “antisemitism” is prejudicial and unpersuasive rhetoric, and if you want to levy an accusation of promulgating “a conspiracy theory spun by cranks” you know where The Pit is.
Stranger