[Thorin]

Yes.

[yonif]

Then why the IAF use of napalm and not bombs which could sink the ship?

[rmlew]

Why didn't Israel arm the planes properly (ie rockets, and armour piercing bombs), paint the planes with the UAR insignia instead of the Star of David, and have the pilots chatter in Arabic?

Either Israel was horribly incompetent at war while competent in cover up, or it was an accident.
Occams razor says accident.