The Mystere drivers were going much faster than that.
And what flag the ship flies is the last thing you look at when rigging a ship
The US Navy maritime patrol community is better-trained at this thing than Israeli fast-movers are.
FOI P-3s when on station fly at 200 ft. 200 Kts
Mysteres scrambled on a panic call fly 500 knots and 1,000 feet.
You look at the ship construction and configuration. And then see if that matches the name and flag that should go to it.
Sure.
Do that in a single-seat fast-mover under wartime conditions. Do it reliably, while knowing that getting too low and slow next to a hostile ship is a great way to get shot down.
So even if it hadnt been identified by a flying boxcar earlier.
And you're going to tell me that there's never been a breakdown in communications between a maritime patrol outfit, the Israeli Army, and a bunch of fast-movers?
And the first attacking aircraft didnt get a good look before it started its run. The following flights have plenty of time to get a good look.
After the damn ship's on fire?
One thing is for sure! The attack was no accident!
OK. Please tell that to the crew of the USCGC Point Welcome (attacked by the USAF off Vietnam, 1966) and the crew of the USS Nautilus (attacked by US Army Air Force bombers during the Battle of Midway, 1942).