Putting the existence debate aside, I'd enjoy buying a drink for the first Navfac sailor to have recognized a Type 1 detection, on a real time basis. Hopefully it was made on a mid watch while balancing coffee, a smoke and a slide rule. And if a slide rule wasn't available I can visualize long math on the back of a TARF:)
I didn't realize Papa came out of area that early. At those speeds I wouldn't be surprised if the writers vibrated off their tables and styli had to be changed every 10 minutes. A shame it wasn't recognized at the time.